Micro-Comm S4500 - Page 32

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RTU32 Protocol Layout
M1500 Station Address #1
Relay outputs DO1-DO4 Discrete outputs 1-4
Discrete inputs DI1-DI8 Discrete inputs 1-8
EDI Modules 1,2 DI17-DI48 Expansion inputs 1-32
Analog inputs AI1-AI4 Analog inputs 1-4
Analog outputs AO1,AO2 Analog outputs 1-2
M8030-M8033 Analog outputs 3-4
M8012 Flow Rate (16bit)
M8013,M8014 Flow Total (32bit)
M1500 Station Address #2
Script DO9-DO16 Discrete outputs 1-8
EDI Module 3 DI49-DI64 Discrete inputs 1-16
EDI Modules 4,5 DI65-DI96 Expansion inputs 1-32
M8130-M8133 Analog Outputs 1-4
M8112 Flow Rate (16bit)
M8113,M8114 Flow Total (32bit)
Old RTU Protocol Layout
M1500 Enhanced Control Card #1
Relay outputs DO1-DO4 Discrete outputs 1-4
Discrete inputs DI1-DI6 Discrete inputs 1-6
Script DI9-DI16 Input Expansion Module inputs 1-8
EDI Module #1 (DI17-DI32) Input Expansion Module inputs 9-24
Script DO9-DO16 status Input Expansion Module inputs 25-32
Low 8-bits of analogs AI1-AI4 Analog inputs A,B,C,D
Pulse Input PI1 (DI7) Pulse Input
M8030-M8031 Analog Outputs 1-2 (8bit)
M1500 Enhanced Control Card #2
Script DO9-DO14 Discrete outputs 1-6
Discrete Inputs DI7-DI8 Discrete inputs 1-2
EDI Module #4 (DI65-DI68) Discrete inputs 3-6
EDI Module #2 (DI33-DI48) Input Expansion Module inputs 1-16
Relay Dones (DO1TD-DO8TD) Input Expansion Module inputs 17-24
Script DO9-DO16 status Input Expansion Module inputs 25-32
Low 8-bits of Script AI7-AI12 Analog inputs A,B,C,D,E,F
Pulse Input PI2 (DI8) Pulse Input
M8130-M8131 Analog Outputs 1-2 (8bit)
The table below shows how the physical I/O on the M1500 or M1550 is mapped for both proto-
cols: