WAGO 750-872/020-000 Manual page 172

164 • MODBUS Functions
MODBUS Register Mapping
12288
... 24575
24576
... 25340
25341
... 28671
28672
... 29436
29437
... 65535
The digital Modbus services (coil services) are Bit accesses, with which only
the states of digital I/O modules can be determined or changed. Complex I/O
modules are not attainable with these services and so they are ignored.
Because of this the addressing of the digital channels begins again with 0, so
that the MODBUS address is always identical to the channel number, (i.e. the
digital input no. 47 has the MODBUS address "46").
Bit Access Reading (with FC1 and FC2):
0
... 511
512
... 1023
1024
... 4095
4096
... 8191
8192
... 12287
12288
... 32767
32768
... 34295
34296
... 36863
36864
... 38391
38392
... 65535
Bit Access Writing (with FC5 and FC15):
0
... 511
512
... 1023
0x3000
... 0x5FFF
0x6000
... 0x62FC
0x62FD
... 0x6FFF
0x7000
... 0x72FC
0x72FD
... 0xFFFF
Modbus-Address
[dec] [hex]
0x0000
... 0x01FF
0x0200
... 0x03FF
0x0400
... 0x0FFF
0x1000
... 0x1FFF
0x2000
... 0x2FFF
0x3000
... 0x7FFF
0x8000
... 0x85F7
0x85F8
... 0x8FFF
0x9000
... 0x95F7
0x95F8
... 0xFFFF
Modbus-Address
[dec] [hex]
0x0000
... 0x01FF
0x0200
... 0x03FF
%MW0 NOVRAM
... %MW12287 8kB retain memory (max. 24kB)
%QW512 Physical Output Area (2)
... %QW1275 Additional 764 Words physical output data
- Modbus Exception: "
Illegal data address"
%QW512 Physical Output Area (2)
... %QW1275 Additional 764 Words physical output data
- Modbus Exception: "
Illegal data address"
Memory Range
Physical Input Area (1)
Physical Output Area (1)
-
%QX256.0
...%QX511.15
%IX256.0
...%IX511.15
%MW0
... %MW1279.15
Physical Input Area (2)
Physical Output Area (2)
Memory Range
Physical Output Area (1)
Physical Output Area (1)
Description
First 512 digital inputs
First 512 digital outputs
Modbus Exception:
"Illegal data address"
PFC-OUT-Area
Volatile PFC Output variables
PFC-IN-Area
Volatile PFC Input variables
NOVRAM
8kB retain memory (max. 24kB)
th
Starts with the 513 and ends with
th
the 2039 digital input
Modbus Exception:
"Illegal data address"
th
Starts with the 513 and ends with
th
the 2039 digital output
Modbus Exception:
"Illegal data address"
Description
First 512 digital outputs
First 512 digital outputs
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