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Chapter 3 Installation and Test Operation
3.4 Test Operation
Terminal resistance switch of Pnet cable shall be On. If the switch is not On, communication errors may
occur. Check LED operation status if normal with power on after communication cable is connected. If
normal, download the applicable program to PLC via SOFTMASTER so to execute the program.
3.4.1 Precautions for system configuration
1) Station No. of each slave shall be surely different from each other including this module. If connected
with the repeated station No., communication error may occur, leading to communication trouble.
High-speed link station No. of all stations also shall be different from each other to use High-speed
link service.
2) Use the communication cable as specified only. If not, serious error may occur to communication.
3) Check communication cable if disconnected or shorted prior to installation.
4) Tighten up communication cable connector until connected firmly. If cable connection is unstable, serious
error may occur to communication.
5) If remote communication cable is connected, keep the cable far away from power line or inductive noise.
6) Since the coaxial cable is not flexible, it is to be diverged min. 30cm away from the connector in
communication module. If the cable is bent at a right angle or transformed compulsorily, cable
disconnection or connector damage in communication module will be caused.
7) If LED operation is abnormal, refer to Chapter 10 Troubleshooting to check for causes and take actions
against. Contact service center if the error is as before.
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Pnet I/F Module 2MLL-PSRA, 2MLL-PMEA, 2MLL-PMEB User's Guide
Honeywell
R240
January 2019
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