Technical data

160 • MODBUS Functions
Internal Variables
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
Bit Access Reading:
Start address End
address
Memory range
0x0000 0x01FF physical Inputs process image (1)
0x0200 0x03FF physical Outputs process image (1)
0x1000 0x1FFF Output bits of the PFC variables (MODBUS TCP)
0x2000 0x2FFF Inputbits of the PFC variables (MODBUS TCP)
0x3000 0x35F7 physical Inputs process image (2)
0x4000 0x45F7 physical Outputs process image (2)
Bit Access Writing:
Start address End
address
Memory range
0x0000 0x01FF
0x0200 0x03FF
physical Outputs process image (1)
0x1000 0x1FFF
0x2000 0x2FFF
Input bits of the PFC variables (MODBUS TCP)
0x3000 0x35F7
0x4000 0x45F7
physical Outputs process image (2)
6.5 Internal Variables
Address Access Length
(word)
Remark
0x1000 R/W 1 Watchdog-Time read/write
0x1001 R/W 1 Watchdog Coding mask 1-16
0x1002 R/W 1 Watchdog Coding mask 17-32
0x1003 R/W 1 Watchdog Trigger
0x1004 R 1 Minimum Trigger time
0x1005 R/W 1 Watchdog stop (Write sequence 0xAAAA, 0x5555)
0x1006 R 1 Watchdog Status
0x1007 R/W 1 Restart Watchdog (Write sequence 0x1)
0x1008 RW 1 Stop Watchdog (Write sequence 0x55AA or 0xAA55)
0x1009 R/W 1 MODBUS -and HTTP- close at Watchdog Timeout
0x100A R/W 1 Watchdog configuration
0x100B W 1 Save Watchdog parameter
0x1020 R 1-2 LED Error Code
0x1021 R 1 LED Error Argument
0x1022 R 1-4 Number of analog output data in the process image (in bits)
0x1023 R 1-3 Number of analog input data in the process image (in bits)