PRECISION DIGITAL PD865 Manuel utilisateur

PRECISION DIGITAL CORPORATION

89 October Hill Road • Holliston, MA 01746 USA

Tel (800) 343-1001 • Fax (508) 655-8990 www.predig.com

SNOOPER MODEL PD865

MODBUS®SERIAL INPUT

Instruction Manual

Modbus®RTU Master, Slave, or Snooper Mode

6-Digit Display, 0.56" (14 mm) High, Red LEDs, Sunlight Readable

Linear, Square Root, or Programmable Exponent

16-Point Linearization

Maximum/Minimum Display

Type 4X, NEMA 4X, IP65 Front

Universal Power Supply 85-265 VAC

12-36 VDC/12-24 VAC Power Option

2 or 4 Relays + 4-20 mA Output Options

24 VDC Transmitter Power Supply Option

RS-485 Serial Communications

Proxy Polling for up to 8 Process Variables

PD865 Snooper ModbusSerial Input Meter Instruction Manual

Disclaimer

The information contained in this document is subject to change

without notice. Precision Digital makes no representations or

warranties with respect to the contents hereof; and specifically

disclaim any implied warranties of merchantability or fitness for a

particular purpose.

CAUTION: Read complete

instructions prior to

installation and operation

of the meter.

WARNING: Risk of

electric shock or

personal injury.

Warning

This product is not recommended for life support applications or

applications where malfunctioning could result in personal injury or

property loss. Anyone using this product for such applications does

so at his/her own risk. Precision Digital Corporation shall not be held

liable for damages resulting from such improper use.

Limited Warranty

Precision Digital Corporation warrants this product against defects in

material or workmanship for the specified period under

“Specifications” from the date of shipment from the factory. Precision

Digital’s liability under this limited warranty shall not exceed the

purchase value, repair, or replacement of the defective unit.

Registered Trademarks

All trademarks mentioned in this document are the property of their

respective owners.

www.predig.com

PD865 Snooper ModbusSerial Input Meter Instruction Manual

Table of Contents

INTRODUCTION------------------------------------------------------------------------------------6

ORDERING INFORMATION --------------------------------------------------------------------6

SPECIFICATIONS ---------------------------------------------------------------------------------7

General-------------------------------------------------------------------------------7

Operating Modes -----------------------------------------------------------------8

Programmable Features for Master Mode--------------------------------9

Serial Communications---------------------------------------------------------9

Display Functions-------------------------------------------------------------- 10

Relays ------------------------------------------------------------------------------ 11

Isolated 4-20 mA Transmitter Output------------------------------------ 12

COMPLIANCE INFORMATION --------------------------------------------------------------13

Safety------------------------------------------------------------------------------- 13

SAFETY INFORMATION-----------------------------------------------------------------------13

INSTALLATION-----------------------------------------------------------------------------------14

Unpacking------------------------------------------------------------------------- 14

Panel Mounting------------------------------------------------------------------ 14

MOUNTING DIMENSIONS --------------------------------------------------------------------15

Connections---------------------------------------------------------------------- 16

Connector Labeling ---------------------------------------------------------- 16

Power Connections ---------------------------------------------------------- 17

Serial Connections ----------------------------------------------------------- 18

Relay Connections ----------------------------------------------------------- 19

Switching Inductive Loads-------------------------------------------------- 19

4-20 mA Output Connections---------------------------------------------- 21

SETUP AND PROGRAMMING---------------------------------------------------------------22

Front Panel Buttons and Status LED Indicators--------------------- 23

Display Functions and Messages----------------------------------------- 24

Main Menu ------------------------------------------------------------------------ 29

Setting Numeric Values ------------------------------------------------------ 29

Meter Setup----------------------------------------------------------------------- 30

Operating Modes (nmode) ---------------------------------------------------- 30

Master Mode (nmastr)------------------------------------------------------ 31

Proxy Polling Mode ---------------------------------------------------------- 32

Slave Mode (Slave) --------------------------------------------------------- 34

Snooper Mode (Snoopr)---------------------------------------------------- 35

Serial Communications (SEriAL)----------------------------------------- 36

Program Menu (Prog)------------------------------------------------------- 36

Setting the Display Decimal Point (disp..dp)--------------------------- 37

PD865 Snooper ModbusSerial Input Meter Instruction Manual

Setting the Float Decimal Point (Flot..dp)------------------------------ 37

Scaling the Display Value (scale) --------------------------------------- 38

Setting the Relay Operation (relay) ------------------------------------ 39

Relay and Alarm Operation ------------------------------------------------ 42

Scaling the 4-20 mA Analog Output (Aout)---------------------------- 49

Setting Up the Password (pass) ------------------------------------------- 50

Locking the Meter ------------------------------------------------------------ 50

Unlocking the Meter---------------------------------------------------------- 51

Advanced Features Menu---------------------------------------------------- 52

Advanced Features Menu & Display Messages---------------------- 53

Display Math Function (func) --------------------------------------------- 54

Noise Filter (filter) -------------------------------------------------------- 55

Noise Filter Bypass (bypass)---------------------------------------------- 55

Low-Flow Cutoff (CutofF)-------------------------------------------------- 55

Analog Output Programming (aoutpr)---------------------------------- 56

4-20 mA Output Calibration------------------------------------------------57

Display Intensity (d-inty)-------------------------------------------------- 58

Information (info)------------------------------------------------------------ 58

OPERATION---------------------------------------------------------------------------------------59

Master and Slave Connections -------------------------------------------- 59

Maximum/Minimum Readings---------------------------------------------- 62

TROUBLESHOOTING--------------------------------------------------------------------------63

Determining Software Version--------------------------------------------- 63

Reset Meter to Factory Defaults------------------------------------------- 63

Factory Defaults & User Settings----------------------------------------- 64

Troubleshooting Tips --------------------------------------------------------- 68

SLAVE MODE REGISTER TABLE----------------------------------------------------------69

PD865 Snooper ModbusSerial Input Meter Instruction Manual

Table of Figures

Figure 1: Panel Cutout and Mounting...............................................14

Figure 2: Meter Dimensions – Side View..........................................15

Figure 3: Case Dimensions – Top View............................................15

Figure 4: Connector Label: 4 Relays, 4-20 mA Out & 24 V Supply16

Figure 5: Power Connections............................................................17

Figure 6: RS-485 Connection ............................................................18

Figure 7: Standard and Optional Relay Connectors........................19

Figure 8: AC and DC Loads Protection ............................................19

Figure 9: Low Voltage DC Loads Protection....................................20

Figure 10: 4-20 mA Output Powered by Meter.................................21

Figure 11: 4-20 mA Output Powered Externally...............................21

Figure 12: PD865 Slave & Snooper Connected to a Master............59

Figure 13: PD865 Master Connected to a Smart Sensor & Chart

Recorder..............................................................................................59

Figure 14: PD865 Master Connected to a PD765 Meter...................60

Figure 15: PD865 Master & Snoopers Connected to Multivariable

Level Transmitters .............................................................................60

Figure 16: PD865 Master & Snoopers Connected to Level and

Temperature Sensors.........................................................................61

PD865 Snooper ModbusSerial Input Meter Instruction Manual

INTRODUCTION

The PD865 Snooper Modbus Serial Input Meter can be programmed as a

Modbus RTU Master, Slave, or Snooper. As a Master, the PD865 reads a

slave device, scales the data from it, displays the result, and operates the

internal relays and 4-20 mA output. The PD865 Master mode is capable of

polling up to 8 process variables (Proxy polling feature); it displays PV1 and

allows other PD865s in Snooper mode to read any of the variables being

polled by the Master. As a Slave, it is controlled by a master device. The

data sent to it by the master is scaled, displayed, and used to operate the

relays and 4-20 mA output. As a Snooper the PD865 listens to the Modbus

traffic and picks up a specific register or registers being polled by a Master

device from a specific slave device and processes the data being read.

The PD865 Snooper is housed in a shallow-depth 1/8 DIN panel meter

enclosure that features a NEMA 4X front panel. Data is displayed on an

adjustable intensity, six-digit seven-segment LED display. The Snooper can

be powered from 85-265 VAC or 12-36 VDC. It comes standard with 2

relays and is available with 2 additional relays and 4-20 mA output as

options.

ORDERING INFORMATION

85-265 VAC*

Model 12-36 VDC*

Model Installed

PD865-6R2-06 2 relays

PD865-6R5-16 2 relays, 4-20 mA output/24 V

transmitter supply

PD865-6R7-16 4 relays, 4-20 mA output/24 V

transmitter supply

PD865-7R5-06 2 relays, 4-20 mA output

PD865-7R7-06 4 relays, 4-20 mA output

*All models may be powered from AC or DC. See Specifications for details.

Accessories

Model Description

PDA7485-I RS-232 to RS-422/485 Isolated Converter

PDA7485-N RS-232 to RS-422/485 Non-Isolated Converter

PDA8485-I USB to RS-422/485 Isolated Converter

PDA8485-N USB to RS-422/485 Non-Isolated Converter

PDX6901 Suppressor (snubber): 0.01 µF/470Ω, 250 VAC

Enclosures NEMA 4 & explosion-proof enclosures**

Plastic, steel, stainless steel & cast aluminum

**Enclosures available for 1-10 meters. Visit our website for details.

PD865 Snooper ModbusSerial Input Meter Instruction Manual

SPECIFICATIONS

Except where noted all specifications apply to operation at +25°C.

General

Input/Output Modbus RTU over RS-485

DISPLAY Six digits, 0.56" (14 mm) high, red LED. Displays from

-199999 to 999999, automatic leading zero blanking.

DISPLAY

UPDATE RATE Master: 10/second to once every 25.5 seconds

Slave/Snooper: Dependent on master device (e.g. PLC)

OVERRANGE Values greater than the highest Input value programmed

cause the display to flash 999999

UNDERRANGE Values less than the Input 1 value cause the display to

flash -199999

PROGRAMMING

METHODS Four front panel buttons, or via Modbus registers.

RECALIBRATION Only required for the 4-20 mA output. Calibrated at the

factory. Recalibration is recommended at least every

12 months.

MAX/MIN

DISPLAY Max/min readings are stored until reset by the user or

when power to the meter is turned off. User can reset by

front panel pushbuttons or via Modbus registers.

PASSWORD Programmable password restricts modification of

programmed settings.

NON-VOLATILE

MEMORY All programmed settings are stored in non-volatile memory

for a minimum of ten years, with or without power.

POWER AC: 85-265 VAC, 50/60 Hz

DC: 90-265 VDC

Optional: 12-36 VDC, 12-24 VAC

Model Watts

PD865-6R2-06 6

PD865-6R5-16 8

PD865-6R7-16 15

PD865-7R5-06 10

PD865-7R7-06 10

REQUIRED FUSE UL Recognized, 5 A max, slow-blow; up to 6 meters

may share one fuse.

ISOLATED

TRANSMITTER

POWER SUPPLY

One transmitter power supply (Optional)

24 VDC 10% @ 200 mA max. (-1 option)

ISOLATION 4 kV input/output-to-power line

500 V input-to-output or output-to-24 VDC supply

PD865 Snooper ModbusSerial Input Meter Instruction Manual

ENVIRONMENTAL Operating temperature range: -40 to 65°C

Storage temperature range: -40 to 85°C

Relative humidity: 0 to 90% non-condensing

CONNECTIONS Removable screw terminal blocks accept 12 to 22 AWG

wire.

ENCLOSURE 1/8 DIN, high impact plastic,

UL 94V-0, color: gray

MOUNTING 1/8 DIN panel cutout required. Two panel mounting

bracket assemblies provided

TIGHTENING

TORQUE Screw terminal connectors: 4.5 lb-in (0.5 Nm)

OVERALL

DIMENSIONS 2.45" x 4.68" x 4.19" (62 mm x 119 mm x 106 mm)

(H x W x D)

WEIGHT 8.0 oz (227 g) (2 relays)

9.7 oz (275 g) (4 relays, 4-20mA Output & 24 V supply)

WARRANTY 3 years parts and labor

Operating Modes

MASTER Processes data read from a Modbus RTU slave device

(only one process variable at a time can be displayed on

the master).

Proxy polling feature: Polls up to 8 process variables from

up to 8 slave devices. The Master processes and displays

PV1 and allows other PD865s in Snooper mode to read any

of the variables being polled.

SLAVE Processes data sent to it from a Modbus RTU master

device.

SNOOPER Listens to the Modbus traffic and picks up a specific register

or registers being polled by a Master device from a specific

slave device and processes the data being read.

Note: The relays and the 4-20 mA output are functional in

all modes.

PD865 Snooper ModbusSerial Input Meter Instruction Manual

Programmable Features for Master Mode

FUNCTION CODE Select which Modbus function code (03 or 04) to use in

reading the slave device.

NUMBER

OF PVs Select the number of process variables to be polled by the

Master (PV1-PV8).

SLAVE ID Assign the slave ID or address (1-247) containing the

process variables to be displayed (Slave ID for PV1-8).

NUMBER 5 digit: 30001-39999 or 40001-49999

6 digit: 300001-365536 or 400001-465536

Specifies which register(s) to read in the slave device.

Range is dependent on Function Code selection (04 or 03)

and digits selection (5 or 6).

PV2-PV8: Select 1 register for Short integer or 2 registers

for Long integer and Floating point data types.

DATA TYPE Select the data format that the slave device uses. Select

between Short integer (2 byte) and Long integer (4 byte) or

floating point (4 byte), Signed or Unsigned (integer only)

and byte order (big-endian vs. little-endian).

POLL TIME 0.1 to 25.5 sec. Time between read-commands (Master

mode) or listening-time window (Snooper mode).

SLAVE

RESPONSE

TIMEOUT

0 to 25.4 seconds X3 (76.2 sec). Time allowed for the slave

to respond to a command. Programming 0 disables the

timeout. This setting is used by Master and Slave modes.

Serial Communications

SLAVE ID

OR ADDRESS 1 – 247. Specifies the ID or address of the slave device

(Master or Snooper mode) or the address of the PD865

(Slave mode).

BAUD RATE 300 – 19,200 bps

DATA 8 bit (1 start bit, 1 or 2 stop bits)

PARITY None, even, or odd. 1 or 2 stop bits selectable for None.

BYTE-TO-BYTE

TIMEOUT 0.01 – 2.54 seconds

TURN AROUND

DELAY Less than 2 ms (fixed)

PD865 Snooper ModbusSerial Input Meter Instruction Manual

Display Functions

INTENSITY 1 to 8. To optimize viewing based on ambient lighting

conditions.

DISPLAY

DECIMAL POINT Up to five decimal places: d . ddddd, dd . dddd,

ddd . ddd,dddd . dd,ddddd . d,or dddddd

FLOAT

DECIMAL POINT Select the number of decimals to use for the floating point

data expected from the slave or master device (this is

independent from the display decimal point selection).

MATH

FUNCTIONS Linear, square root, or programmable exponent (0.50000

to 2.99999).

MULTIPOINT

SCALING 2 to 16 points.

NOISE FILTER Programmable from 2 to 199 (0 will disable filter)

BYPASS 0.2 to 99.9% of full-scale.

CUTOFF 0 to 999999. 0 disables cutoff.

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