Internal Variables - WAGO 750 Series Manual

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
... 65535
Bit Access Writing (with FC5 and FC15):
0
... 511
512
... 1023
1024
... 65535

4.2.5 Internal Variables

Address Access
0x1000
0x1001
0x1002
0x1003
0x1004
0x1005
0x1006
0x1007
0x1008
0x1009
0x100A R/W
0x1020
0x1021
0x1022
0x1023
0x1024
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
Modbus-Address
[dec] [hex]
0x0000
... 0x01FF
0x0200
... 0x03FF
0x0400
... 0xFFFF
Modbus-Address
[dec] [hex]
0x0000
... 0x01FF
0x0200
... 0x03FF
0x0400
... 0xFFFF
Length
(word)
R/W 1
R/W 1
R/W 1
R/W 1
R 1
R/W 1
R 1
R/W 1
RW 1
R/W 1
1
R 1-2
R 1
R 1-4
R 1-3
R 1-2
Memory Range
Physical Input Area
Physical Output Area
Memory Range
Physical Output Area
Physical Output Area
Remark
Watchdog-Time read/write
Watchdog Coding mask 1-16
Watchdog Coding mask 17-32
Watchdog Trigger
Minimum Trigger time
Watchdog stop (Write sequence 0xAAAA, 0x5555)
Watchdog Status
Restart Watchdog (Write sequence 0x1)
Stop Watchdog (Write sequence 0x55AA or 0xAA55)
MODBUS -and HTTP- close at Watchdog Timeout
Watchdog configuration
LED Error Code
LED Error Argument
Number of analog output data in the process image (in bits)
Number of analog input data in the process image (in bits)
Number of digital output data in the process image (in bits)
Fieldbus Communication
MODBUS Functions
Description
First 512 digital inputs
First 512 digital outputs
Modbus Exception:
"Illegal data address"
Description
max 512 digital outputs
max 512 digital outputs
Modbus Exception:
"Illegal data address"
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