WAGO-I/O-SYSTEM 750
MODBUS – CODESYS 2 287
750-8207 PFC200 CS 2ETH RS 3G
Manual
Draft version 1.2.1 from 2017-09-13, valid from FW Version 02.06.20(09)
10.4.4.2 MODBUS Mapping for Write Bit Services FC5, FC15
The table below outlines the mapping for the MODBUS-writing, bit-oriented
services:
•
FC5 – Write Single Coil
•
FC15 – Write Multiple Coils
Table 207: MODBUS Mapping for Write Bit Services FC5, FC15
MODBUS Address
(hexadecimal values
in parentheses)
IEC 61131
Address
Description
0 … 6143
(0x0000 … 0x17FF)
%IX1000.0 …
%IX1383.15
MODBUS Output:
6144 PFC input bit variables in the first
384 registers/words (768 bytes) of the
2kB MODBUS output process image in
the PII.
6144 … 12287
(0x1800 … 0x2FFF)
%QX1000.0 …
%QX1383.15
MODBUS Output:
MODBUS-only area for bit-oriented write
access.
Bit-based write services for this area are
acknowledged by the MODBUS slave
with the MODBUS exception code
“ILLEGAL DATA ADDRESS” (0x02).
12288 … 65535
(0x3000 … 0xFFFF)
%MX0.0 …
%MX3327.15
Maximum bit-addressable flag area:
53248 bit flags (6.5 kB);
the actual addressable flag area
depends on the current memory
arrangement in CODESYS.