296 Modbus – CODESYS 2
WAGO I/O SYSTEM 750 XTR
750-8202/040-001 PFC200 2ETH RS TELE XTR
Manual
Version 1.2.0, valid from FW Version 03.01.07(13)
9.4.4.2 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 217: 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.
