Table 125: Register Access Writing (With Fc6, Fc16, Fc22 And Fc23) - WAGO -I/O-SYSTEM 750 Manual

WAGO-I/O-SYSTEM 750
750-882 Media Redundancy ETHERNET Controller
Register Access Writing (with FC6, FC16, FC22 and FC23)

Table 125: Register access writing (with FC6, FC16, FC22 and FC23)

MODBUS address
[dec]
0...255
256...511
512...767
768...1023
1024...4095
4096...12287
12288...24575 0x3000...0x5FFF
24576...25340 0x6000...0x62FC
25341...28671 0x62FD...0x6FFF
28672...29435 0x7000...0x72FB
29436...32767 0x72FC...0x7FFF
32768...36863 0x8000...0x8FFF
36864...65535 0x9000...0xFFFF
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").
IEC 61131
[hex] address
0x0000...0x00FF %QW0...%QW255
0x0100...0x01FF %IW256...%IW511
0x0200...0x02FF %QW0...%QW255
0x0300...0x03FF %IW256...%IW511
0x0400...0x0FFF
0x1000...0x2FFF
%MW0...%MW12287
%QW512...%QW1275 Physical output area (2)
%QW512...%QW1275 Physical output area (2)
Fieldbus Communication 245
Memory range
Physical output area (1)
First 256 words of physical output data
PFC IN area
Volatile PFC input variables
Physical output area (1)
First 256 words of physical output data
PFC IN area
Volatile PFC input variables
- MODBUS exception:
"Illegal data address"
- Configuration register ( see following
chapter „Configuration Functions")
Not with FC22 and FC23!
NOVRAM
24 kB retain memory *)
*) In Target settings RETAIN on 0, flags on
MAX (24 kB)
Additional 764 words physical output data
- MODBUS exception:
"Illegal data address"
Additional 764 words physical output data
- MODBUS exception:
"Illegal data address"
- NOVRAM
"8 kB retain memory *)
*) In Target settings RETAIN on 0, flags on
MAX (32 kB)
- MODBUS exception:
"Illegal data address"
Manual
1.5.0