CNCroom MB2 Manuel utilisateur

MachBob2 (MB2)

Owner’s manual

Doc E1.6Rev5 (8/17/2017)

for PCB ver 1.3, 1.5 and 2.0

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Introduction

It is perhaps well understood that in an industrial environment, personal computers, motion

control boards and logic signals can face a large amount of interference from things such as

power cables, motors, welding machines, magnetic contactors etc.

We can help to minimize the effects of this interference by having any susceptible electronics

enclosed in a metal control cabinet and using the correct safety and best practice techniques,

which include, but are not limited to the installation of noise reduction such as an isolated

transformer and noise filters.

While these things will help us achieve a better result, using a control board designed for

industrial applications can be more important.

MachBob2 (MB2) is designed for industrial application and specifically to work with the Ethernet

Smooth Stepper (ESS) which is an excellent motion control board designed to be used with

Mach3 and Mach4

Specification and Features

•By using an Ethernet connection, the ESS is far more noise resistant than when using a USB or

parallel Port connection and therefore helps to protect the logic signal when the controller

and drives are located a large distance from the computer.

•Runs on Mach3 / Mach4 with Windows XP, Win7, Win8 both 32 and 64 bit, on both desktop

and notebook computers.

•New! Utilizes All 3 ports of the ESS.

•New! The Motion Command Signal can be selected between Pulse/Sign, CW/CCW, and

Quadrature. Frequency can be selected from 32 kHz to 4 MHz

•New! Differential line driver for motion signals, allows for longer wiring with more resistance

to interference when compared to TTL open end.

•New! A single 24Vdc Power Supply is needed. There is a 5Vdc isolated and non-isolated dc2dc

converter on board, thus saving installation space and wiring.

•New! OSSD (Output Signal Switching Device) outputs and safety circuit are implemented when

a peripheral device such as a servo motor drive or a spindle VFD (Variable Frequency Drive)

trigger an alarm condition, which causes the Safety Circuit to disengage the OSSD output. This

method is used on large CNC machines to cut power from the drives.

•New! LED status for all inputs and outputs including motion control signals. Makes it much

easier to diagnose and trouble shoot.

•Isolated power and ground between the PC, ESS and I/O, which eliminates crossover noise and

ground loop problems.

•New! Polarity and over voltage protection (in conjunction with a fuse) for the 24Vdc power

supply.

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•An “AnaSpeed” circuit has been implemented. This circuit is totally isolated from the MB2 and

forms a part of the VFD inverter, acting as a digital VR (variable resistor). High voltage noise

from the inverter cannot cause interfere through this connection.

•A charge-pump signal is provided. This helps the user to form a safety interlock condition

between controller and devices.

•22 isolated input terminals, consisting of 17 terminals of NPN and 5 terminals of PNP type.

•14 NPN isolated output terminals capable of sinking current up to 100mA for each channel and

up to 500mA per group.

•New! MB2v1.5 and 2.0 - 2 onboard relays with both NO/NC contacts and “Off Delay Time”,

which can be used for such application as “Z Drop Protection.” (MB2v1.3 does not have this

feature)

•New! MB2v2.0 -The K2 Relay can now be controlled by a charge pump signal. Please notice

blue arrow on page19, Figure 19,the underneath layout of the MB2. Showing the appropriate

solder bridge for modification.

•Spring terminals for quicker connecting and disconnecting of cables. They are resistant to

vibration, so no more screws which have rattled loose and no more forgetting to tighten.

Precaution

•Remember to static discharge before touching any part of ESS/MB2. Ground your body

by wearing a grounding strap or frequent touching an earthed metal chassis to release

electrostatics.

•Make sure that there is no high voltage leak from your soldering iron when soldering

the solder-bridge – the safest way is to unplug your soldering iron from the mains

power when it has reached a high enough temperature to melt the solder. High voltage

leakage from a cheap soldering iron can potentially damage the integrated circuit (IC)

on the MB2 board.

•The MB2 board is Fragile, do not drop, as it could badly damage the electronics.

•In certain circumstances, it could be possible for the MB2 board to build up excessive

heat if many of the inputs and outputs are active at same time over an extended

period. It is therefore advisable to install a good quality cooling fan to ventilate the

cabinet.

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Quick Reference

24Vdc

Power Supply

24Vdc

VFD Inverter

Analog vi

Foward

(b)Single end

connection

(a)Differential

connection

Drive

Ports and Pins meaning

X110 = input, port 1, pin 10

Y301 = output, port 3, pin 01

Abbr. Meaning Output

SPD Spindle Y 101

CP ChargePump Y114

NO1 Normal Open Contact1 Y201

NO2 Normal Open Contact2 Y214

AO Analog Output Y317

Abbreviation and Ports/Pins

Figure 1, MB2 Overview Connection

Table 1, Ports and Pins Reference Tables

Quick Reference is a summary for the experienced user.

Figure 1 is a shrinkage view of MB2 board. It shows the connection of inputs & outputs, power supply,

analog output for the VFD and axis signals, including differential and single end connections. If

possible, it is suggested that you should first try the differential connection option as shown in Figure 1

(a), as it is more noise resistant than the single end connection of Figure 1 (b)

Table 1 is a summary of Ports and Pins and their corresponding reference numbers. All pin numbers

preceded by an “X” are inputs and if preceded by a “Y” are outputs. Using X110 as an example. The

“X” means it is an input. The first digit “1” is the port number, the last 2 digits “10” is the pin number.

Pin I/ O Te r m Na me I/ O Ty p e Pin I/ O Te r m Na me I/ O Ty p e Pin I/ O Te r m Na me I/ O Ty pe

1 O SPD(Spindle) Sink output 1 O NO1 Relay1 Contact 1 O Y301 Sink output

2 O XS (X Step) Line driver 2 I OSSD Sink Output 2 O Y302 Sink output

3 O XD (X Dir) Line driver 3 I X203 NPN input 3 O Y303 Sink output

4 O YS (Y Step) Line driver 4 I X204 NPN input 4 O Y304 Sink output

5 O YD (Y Dir) Line driver 5 I X205 NPN input 5 O Y305 Sink output

6 O ZS (Z Step) Line driver 6 I X206 NPN input 6 O Y306 Sink output

7 O ZD (Z Dir) Line driver 7 I X207 NPN input 7 O Y307 Sink output

8 O AS (A Step) Line driver 8 I X208 NPN input 8 O Y308 Sink output

9 O AD (A Dir) Line driver 9 I X209 NPN input 9 O Y309 Sink output

10 I X110 NPN input 10 I X210 NPN input 10 I X310 PNP input

11 I X111 NPN input 11 I X211 NPN input 11 I X311 PNP input

12 I X112 NPN input 12 I X212 NPN input 12 I X312 PNP input

13 I X113 NPN input 13 I X213 NPN input 13 I X313 PNP input

14 O CP(ChargePump) Sink output 14 O NO2 Relay2 Contact 14 O Y314 Sink output

15 I X115 NPN input 15 I X215 NPN input 15 I X315 PNP input

16 O BS (B Step) Line driver 16 O

CS (C Step)

Line driver 16 O Y316 Sink output

17 O BD (B Dir) Line driver 17 O CD (C Dir) Line driver 17 O AO Analog output

Port1 (output)

Port2 (Pins 2-9 as input)

Port3 (Pins 2-9 as output)

*Output can sink current up to 100mA

and up to 500mA per group of 7 pins

Shrinkage part

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MB2 Layout

MB2v1.5

MB2v2.0

Figure 2, MB2 version 1.5 VS version 2.0 Board Layout

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8–9mm

18-26 AWG

Input (CN1) – Input terminals, consisting of 18 channels of NPN type and 5 channels of PNP

type

Axis (CN2) – Axis signal terminals, consisting of 6 axes, which are; X, Y, Z, A, B, C

Output (CN6) – Output terminals, consisting of 14 NPN sink outputs, Analog signal, 2 Relay’s

NO/NC and an inlet for the 24Vdc power supply

LPT1-3 (CN3-5) – Connectors for the ESS

JP1 – Charge Pump override

RJ-45 – Communication connector, part of the ESS board

ESS and MB2 piggyback

The ESS receives its 5Vdc power from the MB2 when all three jumpers are closed, which is the

default setting. This eliminates the need for an external 5Vdc supply, See Figure 3below. Any

excess in the ribbon cables, has been adjusted to inboard side of the cable clamp, see Figure 4,

this enables you to clearly see the LED status and terminal labels.

Figure 3, Jumpers are closed, No external 5Vdc

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Figure 4, Excess cable has been adjusted to give clear sight of the LEDs and terminal labels

MB2 Connection Diagram

Figure 5, Connection Diagram

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Hardware

Connecting the SmoothStepper to Your PC

The following section has been copied with permission from the Warp9 website at;

http://www.warp9td.com/index.php/documentation/doc-ess#Connecting

The best way to connect your ESS to your PC is to use the Direct Connect method: hook the

Ethernet cable directly from your ESS to the network adapter in your PC. This will make trouble

shooting easier since there are no switches or routers between the ESS and your PC. (A switch

should be fine since it only operates in the lower 3 layers of the TCP/IP stack, but why add extra

equipment if you don't need it. A router should be fine if you only have your ESS and PC

connected to it, but this will require more work to configure and setup. As a result we highly

recommend the direct connection, which is what the SCU [System Configuration Utility]

expects.)

If you don't have an Ethernet Adapter on your PC, we recommend using a PCI or PCI Express

Ethernet Adapter -OR- a USB 2.0 or USB 3.0 Ethernet Adapter. Quite a few people use these

alternatives successfully, including myself.

We STRONGLY discourage using a wireless connection to communicate with your ESS. There can

be much more latency or delay involved with wireless communications, along with a much

higher risk of dropped packets. The ESS needs a fast, stable, and consistent link to your PC.

Many people use a second Ethernet connection or their wireless connection on the PC so they

may easily connect to the internet, which is fine.

While you are running Mach and your CNC system, we recommend that you refrain from

browsing the internet, gaming or streaming music or videos. This can cause your computer to

take too much time away from Mach which could cause lost communications with your ESS

(which can ruin your project).

We also recommend that you disable power saving options (monitor sleep and power off timers,

hard drive sleep timers, and computer sleep timers); these have been known to cause lost

communications with your ESS.

We also recommend that you set Windows Update to notify you that there are updates available

instead of automatically installing them on its own.

We also know of cases where antivirus and anti-malware software have caused problems. We

recommend that you disable them while you are running Mach, IF your PC is not connected to

the internet.

Note that you do not need to assign a static IP address to your computer if you program the ESS

to use an address that is in the same subnet as your computer. The subnet is the same if the first

3 groups of numbers in the IP addresses are the same. Quite often Internet routers will assign

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addresses in the 192.168.0.x or 192.168.1.x ranges. If you wish to use a DHCP server for your

computer, you can do that but the ESS still needs to use a static IP address in the same subnet. A

direct connection to the ESS is the preferred way to go because there is no question as to

whether there is enough bandwidth available to run your machine reliably.

We STRONGLY RECOMMEND THAT YOU DO NOT hook your ESS up to the same Ethernet adapter

that you connect to the Internet with. There is no telling how much CPU and Ethernet bandwidth

is being used up by other applications or other devices on the network. It is therefore officially

discouraged. You are on your own if you wish to mix the Internet with your CNC data. However,

if you wish to change the IP address of the ESS, you may do so with the Configurator Utility.

If the remainder of this section confuses you, don't worry. The SCU in the next section will do all

of the work for you in just a few mouse clicks! The remainder of this section is just to document

what the ESS uses and needs, you may skip to the SCU section.

The ESS comes configured from the factory with a default static IP address of 10.9.9.9 With your

ESS at 10.9.9.9, you will need to assign your network adapter to use 10.9.9.2 or another valid

and unused address in the subnet. We recommend that you keep the 10.9.9.9 IP address

assigned to your ESS, since all of our documentation and videos will use that value. In fact MOST

the user keep this value assigned to their ESS. However, if there is a need to change it, you may

do so with the Configurator Utility.

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Axis Connection X, Y, Z, A, B, C

AXIS CN2 terminal supplies motion command for drives.

VCC

Dir+

Step+

Dir-

Step-

optocoupler

XD-

XS-

(a) differential connection

(b) single end connection

XD+

XS+

Dir+

Step+

Dir-

Step-

*grounding at drive side

XD-

XS-

Line Reciever

XD+

XS+

Dir+

Step+

Dir-

Step-

Optocoupler

XD-

XS-

*grounding at drive side

Figure 6, Axis command terminal and various connection modes

There are two modes to make connection to CN2.

Figure 6 (a) Differential mode has the best noise immunity. It is recommended to use differential

mode if possible.

Figure 6 (b) Single end mode is used if the drive is not compatible with differential mode. There

are two points of VCC to share with all axes.

MB2

Cable Drive Input

Twisted pair

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