Rockwell Automation Allen-Bradley Compact 5000 Series - Page 88

88 Rockwell Automation Publication 5069-UM003B-EN-P - January 2020
Chapter 4 Compact 5000 I/O Serial Module Configuration
Modbus Slave Address Table Limits
• Up to 30 data point ranges can be created, subject to available memory:
– 200 byte maximum of Holding registers (up to 100 INTs or 50 REALs)
– 200 byte maximum of Input registers (up to 100 INTs or 50 REALs)
– Up to 128 Coils (Data Indexes 0…15 at 8-bit boundaries)
– Up to 128 Discrete inputs (Data Indexes 0…15 at 8-bit boundaries)
Modbus Slave Data Mapping Example
• Local:1:O1.Slave.HoldingRegister[0…2] = 400003…400005
• Local:1:O1.Slave.HoldingRegister[3…9] = 432000…432006
• Local:1:O1.Slave.HoldingRegister[10…99] = 400999…410088
• Local:1:O1.Slave.Coil[0].0…[0].7 = 000000…000007
• Local:1:O1.Slave.Coil[1].0 = 000010
• Local:1:O1.Slave.Coil[2].0…[4].0 = 0320000…032016
• Local:1:O1.Slave.Coil[5].0…[15].7 = 000999…001086