ADLINK MNET-J3/S23/MIA/DA2/SAN Single Axis Module Installation and Wiring Guide

10 Mbps/5 Mbps/2.5 Mbps (selected for long-distance or high anti-interference requirements)

The speed of the master station and all slave stations must be consistent, otherwise they cannot connect.

3.3 Communication status indication

The red LED indicator on the module displays the 3.3V internal control power status:

Always on: Module power supply is normal (provided by+5V or+24V of servo driver CN1)

Off or flashing: abnormal power supply or module failure

Some modules also have communication status LEDs (such as green flashing indicating normal communication, and constant light indicating connection), please refer to the corresponding manual for details.

I/O interface and pin definitions (CN1/CN2/CN3)

Taking MNET-J3 as an example, the pin allocation is as follows:

4.1 CN1/CN2 (serial communication)

Pin Name Function Direction

1 RS485+serial communication data+I/O

2 RS485- Serial Communication Data - I/O

3 FG frame grounding (shielding)-

These two ports are used for bus cascading, with CN1 connected to the previous level and CN2 connected to the next level (or vice versa, depending on the module type).

Use standard RJ-45 connectors (8P8C), but only use 4/5 pins (DATA -/DATA+), leaving the other pins reserved.

4.2 CN3 (I/O signal)

Pin Name Function Direction

1 PEL forward limit input

2 MEL negative limit input

3 SD/CPP deceleration input/comparator output (+) I/O

4 ORG origin input input

5 EMGI emergency stop input

6 CPN comparator output (-) output

7 24V 24V power input (external I/O power supply) input

8 GND 24V power supply ground-

9 GND signal ground-

10 FG frame grounding-

Signal Explanation:

PEL/MEL: Positive/negative overtravel limit, usually using normally closed (B-type) contact switches, with a wiring capacity of 24V/6mA. Software can configure logical polarity.

ORG: Origin signal, used for zeroing mode. Supports normally open/normally closed configuration.

EMGI: Emergency stop input, external normally closed contact, triggering the module to immediately stop pulse output (emergency stop can be enabled/disabled by software).

SD/CPP: Dual function pin - can be used as a deceleration input (SD) to decelerate in advance when approaching the limit; It can also be used as the positive output (CPP) of a position comparator to trigger external devices.

CPN: The negative output of the comparator (differential pair CPP/CPN) needs to be used in conjunction with CPP.

Attention to I/O power supply:

The module is usually powered internally (5V/3.3V) by servo driver CN1, but external I/O (limit switches, origin, etc.) require an external 24V power supply, which is connected through CN3's 24V and GND. Make sure to confirm that the 24V power supply capacity meets the total current of all input circuits (usually 6-10mA per switch).

Motion control performance

This series of single axis modules supports the following motion characteristics (implemented by Motionnet main station and APS function library):

Pulse output frequency: No instruction frequency limit (actually limited by Motionnet communication rate and scanning period)

Scanning cycle: Approximately 0.97 ms (theoretical value) at full load of 64 axes at 20 Mbps, ensuring fast response

Acceleration and deceleration types: linear (T-curve) and S-curve (S-curve), with programmable parameters

Sports mode:

Single axis relative/absolute positioning

Single axis speed mode (Jog or continuous operation)

Return to zero (multiple modes, supporting limit+origin+encoder index combination)

Support position/speed coverage (on the fly change)

Feedback: Closed loop position monitoring is achieved through servo drive encoder signals (read by the module and transmitted back to the main station)

Since the module itself does not have an independent CPU, all interpolation operations and trajectory planning are completed by the main station, and the module only executes the received pulse instructions. Therefore, this series of modules does not support multi axis interpolation (line/arc interpolation) and is only suitable for point-to-point (PTP) independent axis motion. If interpolation function is required, the 4-axis module MNET-4XMO should be selected.

Debugging and Configuration (MotionCreatorPro 2)

Similar to MNET-4XMO, this series of modules is also configured and tested through MotionCreatorPro 2 software:

After installing the driver on the main station (such as PCI-7856), open MotionCreatorPro 2.

Click on Field Bus Connect, select Motionnet and baud rate.

The system automatically scans all slave IDs and displays a list of online modules.

For each module, the following can be done:

Axis parameter settings: acceleration and deceleration time, start stop speed, curve type, limit logic, electronic gear, etc.

Single axis motion test: relative/absolute positioning, Jog motion, zeroing.

I/O monitoring: Check the status of PEL/MEL/ORG/EMG and force output comparison signals.

Error code query: When the motion is abnormal, check the returned error code (refer to the APS function library manual).

Common troubleshooting and solutions

7.1 Module unable to connect or communication interrupted

Check power supply: Confirm that the servo drive is powered on and whether the CN1 interface has 5V/24V output. If the Power LED is not on, the module is not powered on.