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Understanding the Features
3--3
PLC Registers
The OP400 panels communicate to the PLC through user defined PLC data
registers. The starting or “Base” register is assigned during panel configuration and
automatically occupies 12 consecutive 16-bit data registers. In this manual the
registers are identified as M+0, M+1, M+2, thru M+11.
Top line data 2 (for long BCD and floating point numbers)
Top line message selection
Second line message selection
Third line message selection
Bottom line message selection
Top line data
Second line data
Function
M+0
M+1
M+2
M+5
M+6
Register
M+3
M+4
PLC
Register
OP--440 Panel PLC Register Map
M+9
M+7
M+10
M+8
M+11
Second line data 2 (for long BCD and floating point numbers)
Third line data
Third line data 2 (for long BCD and floating point numbers)
Bottom line data
Bottom line data 2 (for long BCD and floating point numbers)
Register Overview
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