Antx DiaLog Elite, Руководство пользователя

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DiaLog Elite PLC Interface Manual
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Mapping Elite channels to Modbus registers
I/O channels in the Elite are mapped to PLC/Modbus registers by providing two (2) pieces
of information:
•
Register type – which corresponds to Function Code
•
Register number – number of the register for the particular Function Code
Elite
Register
Type
Description Type of channel in
the Elite
Modbus
Function
Code
1 Read Coil Status Digital 01
2 Read Input Status Digital 02
3 Read Holding Register Analog 03
4 Read Input Register Analog 04
5 Write Coil Relay 05
The register type and register number are defined in the Channel Configuration section of
the Elite.
N
OTE
†
Register types (Function Codes) can be mixed within a single slot in the Elite.
For example,
If Slot 70 is a PLC/Modbus I/O slot,
channel 71 can be a Read Coil Status (1),
channel 72 can be a Holding (3), and
channel 73 can be a Write Coil (5).
The following example shows the steps to identify channels in the Elite that map to PLC
channels:
Elite Channel PLC register
71 (1)0050
72 (3)0121
73 (5)1001
©
Antx, inc. 2001 Version 1.2
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