Crestron ST-COM Manuel utilisateur

This document was prepared and written by the Technical Documentation department at:

Crestron Electronics, Inc.

15 Volvo Drive

Rockleigh, NJ 07647

1-888-CRESTRON

Crestron ST-COM RS-232/422/485 COM Module

Contents

RS-232/422/485 COM Module: ST-COM 1

Description.................................................................................................................................1

Functional Description ................................................................................................1

Physical Description....................................................................................................2

Leading Specifications...............................................................................................................5

Setup ..........................................................................................................................................7

Identity Code ...............................................................................................................7

Preparation for Use......................................................................................................7

Firmware Upgrade....................................................................................................... 9

Programming with SIMPL Windows ......................................................................................12

Configure a ST-COM Program .................................................................................12

ST-COM Symbol ......................................................................................................13

Example Program ......................................................................................................14

Problem Solving ......................................................................................................................15

Troubleshooting......................................................................................................... 15

Further Inquiries ........................................................................................................ 15

Future Updates .......................................................................................................... 16

Future Firmware Upgrades........................................................................................16

Return and Warranty Policies ..................................................................................................17

Merchandise Returns / Repair Service ...................................................................... 17

CRESTRON Limited Warranty.................................................................................17

Operations Guide - DOC. 5695A RS-232/422/485 COM Module: ST-COM •i

Crestron ST-COM RS-232/422/485 COM Module

RS-232/422/485 COM Module:

ST-COM

Description

Functional Description

There are two Crestron RS-232/422/485 COM module configurations available:

ST-COM and STI-COM. All of the features are identical with the exception of input

power requirements and unit nomenclature. The ST-COM uses a power pack rated

for 120 VAC supply and the STI-COM uses a power pack rated for 220 VAC. Use of

the power packs are optional within a Cresnet system. For purposes of this

Operations Guide, the term ST-COM is used for either configuration, except where

noted.

The ST-COM is a device with two independent bidirectional serial ports that can

support RS-232, RS-485, or asynchronous RS-422-based communication. The unit

enables a system to overcome the distance limitations of serial communication. It can

be used as part of the Cresnet system or SmarTouch STS to add control for

additional serial devices such as video projectors or AV switchers. If part of the

Cresnet system, use of the power pack is optional.

Both ports of the ST-COM may be used to control a wide variety of RS-232,

RS-485, or asynchronous RS-422 controlled equipment. A variety of

communications parameters are supported. Valid parameters are as follows.

• Baud rates may be one of the following possible rates: 300, 1200,

1800, 2400, 3600, 4800, 6100, 7200, 9600, 14400, 19200, 28800,

38400, 57600, and 115200. When specifying the baud rate on a port, do

not use commas.

• Parity may be even, odd, none, or zero stick (parity bit always 0). When

specifying the parity use E, O, N, or Z, respectively.

• Data bits may be 7 or 8.

• Stop bits may be 1 or 2.

• Both XON/XOFF handshaking and RTS/CTS handshaking are

supported. XON/XOFF handshaking may be supported by specifying

XON (for both transmit and receive), XONR (for receive only), or

XONT (for transmit only). XON/XOFF and RTS/CTS handshaking are

Operations Guide - DOC. 5695A RS-232/422/485 COM Module: ST-COM •1

RS-232/422/485 COM Module Crestron ST-COM

mutually exclusive in the ST-COM. If both are enabled, RTS/CTS is

used. If CTS handshaking is enabled, the CTS line is monitored by the

ST-COM. The CTS line can also be enabled as a digital input to the

control system; the RTS line can be enabled as a digital output.

• Specify RS422 for standard if RS-422 compatible levels must be

supported.

• Break statement is generated for as long as the signal is held high.

• Provides character pacing in units of milliseconds for all of the data

specified. The range of the pacing is from 1 to 31 milliseconds. Pacing

greater than 31 milliseconds defaults to the maximum (31 ms).

• Supports RS-485. However, additional drivers are required and specific

protocol must be followed. The unit remains in receive mode until

transmission is enabled with one character switching. Consult

Crestron’s award winning customer service team in your area.

Physical Description

The ST-COM is housed in a black enclosure with silk-screened labels on the front

and rear panels. On the front of the unit there are 10 LEDs for indicating the unit’s

current status. All connections are made on the back of the unit. Refer to the physical

views shown below. There are four rubber feet on the base of the unit for stability

and to prevent slippage.

ST-COM Physical Views

1.500 in

(3.810 cm)

6.134 in

(15.580 cm)

1.700 in

(4.318 cm)

6.322 in

(16.058 cm)

6.940 in

(17.628 cm)

7.066 in

(17.948 cm)

2 •RS-232/422/485 COM Module: ST-COM Operations Guide - DOC. 5695A

Crestron ST-COM RS-232/422/485 COM Module

ST-COM Ports

A number of ports are provided on the back of the ST-COM. Each has a silk-

screened label. Refer to illustration and descriptions below.

ST-COM Ports

12 VDC .5A

This direct current (DC) power socket connector is used to supply power via the

external power pack, when attached. If the power pack is used while 24 VDC is

present on the NET connector, the power pack supplies power to the unit (no current

is drawn from the network).

Crestron recommends specific power packs for its devices. The acceptable power

pack for the ST-COM is Crestron part number PW-1205 (PWI-1210 for the

international version, STI-COM). If a power pack other than this Crestron model is

obtained, verify that it meets the required specifications and polarity as shown

below.

Power Pack Specifications

CRESTRON POWER PACK INPUT SPECS OUTPUT SPECS

PW-1205 120V~60Hz 12VDC .5 A

PWI-1210 230V~50Hz 12VDC 1A

Power Pack Output Connector Polarity

NET

These two 6-pin, 6-position RJ11 modular jacks are used to connect the ST-COM

module to either the SmarTouch STS or Cresnet remote control system. When the

module is part of the Cresnet system, power is provided via the NET connection; the

power pack need not be attached. Two NET ports are available so that network units

can be daisy-chained together. Review the latest revision of the Network Modular

Cable Requirements (Doc. 5682).

NOTE: Most 4-conductor phone cables are wired in a crisscross fashion and are not

compatible with Crestron equipment.

NOTE: The ST-CP does not supply network power. Therefore, use the power pack

to supply power to the ST-COM.

If a power pack is attached when the module is part of the Cresnet system, power is

drawn from the power pack. The module does not load the network power, but the

network remains chained for additional network devices that are connected.

Operations Guide - DOC. 5695A RS-232/422/485 COM Module: ST-COM •3

RS-232/422/485 COM Module Crestron ST-COM

COM A/B

These two nine-pin connectors (DB9) connect to serial equipment. These

bidirectional serial ports are used for RS-232, RS-422, or RS-485 communication.

NOTE: The pinout of each nine-pin port is non-standard (refer to table after this

note); it contains RS-422 pins in addition to RS-232. This may result in a conflict

with some equipment and therefore do not use all nine pins. Only the required pins

for each communication type should be connected.

NOTE: To support RS-485, tie pin 1 (RXD-) to pin 9 (TXD-) and pin 4 (TXD+) to

pin 6 (RXD+) in the cable, as shown below.

ST-COM Pinout (COM A / B)

PIN DIRECTION DESCRIPTION

1* To ST-COM (RXD-) RS-422 Receive Data (Idles low)

2ToST-COM

(

RXD

)

RS-232 Received Data

3 From ST-COM

(

TXD

)

RS-232 Transmitted Data

4 From ST-COM

(

TXD+

)

RS-422 Transmit Data

(

Idles hi

)

5RS-232 and RS-422 Si

nal Common

6ToST-COM

(

RXD+

)

RS-422 Receive Data

(

Idles hi

)

7 From ST-COM

(

RTS

)

RS-232 Re

uest to Send

8ToST-COM

(

CTS

)

RS-232 Clear to Send

9 From ST-COM

(

TXD-

)

RS-422 Transmit Data

(

Idles low

)

* RS-422 transmit and receive are balanced signals requiring two lines plus a ground in each direction.

RXD+ and TXD+ should idle high (going low at start of data transmission). RXD- and TXD- should idle

low (going high at start of data transmission). If necessary, RXD+/RXD- and TXD+/TXD- may be

swapped to maintain correct signal levels.

4 •RS-232/422/485 COM Module: ST-COM Operations Guide - DOC. 5695A

Crestron ST-COM RS-232/422/485 COM Module

ST-COM Indicators

There are 10 LED indicators located on the front panel of the ST-COM. Refer to

illustration below and descriptions that follow.

ST-COM Indicators

PWR (Power)

This LED illuminates when 12 volts (from power pack) or 24 volts DC (from

network) is supplied to the ST-COM.

NET

This LED illuminates when communication between the ST-COM and either the

SmarTouch STS or Cresnet system is established. Illumination indicates that the

SIMPL program currently loaded has a network device defined at the same NET ID

as the ST-COM.

RXD (COM A / B)

These LEDs flash when the ST-COM receives data from the serial device attached to

the respective COM ports.

TXD (COM A / B)

These LEDs flash when the ST-COM transmits data to the serial device attached to

the respective COM ports.

RTS (COM A / B)

If RTS/CTS handshaking is enabled, these LEDs illuminate when the ST-COM is

ready to receive transmission of data from a serial device attached to the respective

COM ports.

CTS (COM A / B)

These LEDs illuminate when the serial device on the respective COM port is ready

to accept transmission of data from the ST-COM. This “Clear to Send” signal is

available only if RTS/CTS handshaking is enabled; signal is controlled by external

serial device. If CTS signal is not connected (in cable), the signal is held high and the

LEDs are extinguished.

Leading Specifications

The table on the next page provides a summary of leading specifications for the

ST-COM module. Dimensions and weight are approximations rounded to the nearest

hundredth unit.

Operations Guide - DOC. 5695A RS-232/422/485 COM Module: ST-COM •5

RS-232/422/485 COM Module Crestron ST-COM

Leading Specifications of the ST-COM

DETAILS

12VDC, external power pack or

2.5 Watts (24VDC @ 0.104A), network

Version 1.18.01 or later 1

Version 1.54 or later 2

Version 51205V.UPZ or later 3

Version 51226X.UPZ or later 3

Version 51226W.UPZ or later 3

Version 40104S.UPZ or later 3

CNMS, CNRACK, CNLCOMP Version 3.17.11 m, l, c or later

Operating System

Rack Space Required 1U high, 1/2U wide

(optional with ST-RMK)

Height: 1.70 in (4.32 cm)

Width: 7.07 in (17.95 cm)

Depth: 6.32 in (16.06 cm)

Weight: 2.00 lb (0.93 kg)

SPECIFICATION

Power Requirements:

Default NET ID

SIMPLTM Windows®

ST-CP Update File

Dimensions & Weight

ST-COM Firmware

CEN/CN-TVAV Update File

CNMSX-AV/Pro Update File

CNRACKX/-DP Update File

1 The latest software version can be obtained from the What's New page (SIMPL Windows section) or

Downloads page (SIMPLWIN Library) of the Crestron website (www.crestron.com). New users are

required to obtain access to the FTP site. A later version may be necessary depending on which

control system is used; consult the What's New page for guidance.

2 ST-COMs with later versions of firmware may include features not mentioned in this guide. Newer

versions of this guide can be obtained from the Products page (PRODUCT MANUALS section) of

Downloads page (MANUAL Library) of the Crestron website or contact Crestron customer service.

Firmware upgrade files can be obtained from the What's New page (Other Products section) of the

Downloads page (UPGRADES Library) of the Crestron website.

3 CNX upgrade files are required for either CNMSX-AV/Pro or CNRACKX/-DP. Filenames for CNX

upgrade files have a UPZ extension and ST-CP files are in one EXE or zipped UPZ file. All can be

obtained from the What's New page (Control Systems Update Files section) or Downloads page

(OPSYS Library) of the Crestron website. Update files are specifically designed for certain control

systems. If an update file is loaded into a control system other than the device for which it was

intended, it may lockup the control system, which would then have to be returned to Crestron.

Update files with an "S" designator are for the ST-CP, "V" designator for CEN/CN-TVAV, "W" for

CNRACKX-DP, and "X" for CNMSX-AV/Pro control systems. Control systems are able to

recognize and reject incorrect update files. However, when updating control systems, do not ignore

and Crestron Viewport warning prompts or messages.

As of the date of manufacture, the ST-COM has been tested and found to comply

with specifications for CE marking.

NOTE: This device complies with part 15 of the FCC rules. Operation is subject to

the following two conditions: (1) this device may not cause harmful interference,

and (2) this device must accept any interference received, including interference that

may cause undesired operation.

6 •RS-232/422/485 COM Module: ST-COM Operations Guide - DOC. 5695A

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