Liebert OpenComms Installation & User Manual page 5

Read/Write Holding Registers (0x03, 0x06, 0x10)
Read Input Registers (0x04)
Read, Set Coil Status (0x01, 0x05, 0x0F)
Read Input Status (0x02)
Error Handling
Modbus Packet Formats...............................................................34
Read registers (Function Code 0x03 & 0x04)..................................36
Write single holding register (Function Code 0x06)........................36
Section 6: NIC Setup and Testing.......................................................37
Jumper Placements...........................................................................37
Testing the Network.........................................................................37
Service Terminal Troubleshooting...................................................38
SNMP Troubleshooting ...................................................................38
Web Troubleshooting.......................................................................39
Modbus Troubleshooting .................................................................39
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