Example Of A Process Output Image - WAGO -I/O-SYSTEM 750 User's Installation And Configuration

58 • Fieldbus controller 750-842
Example of process output image
3.2.4.2

Example of a process output image

The following example for the process output image comprises of 2 digital and
4 analog outputs.
It comprises of 4 words for the analog and 1 word for the digital outputs, , i.e.
5 words in total.
In addition, output data can be read back with an offset of 200
added to the MODBUS address.
0x0000 / 0x0200 %QW0
0x0001 / 0x0201 %QW1
0x0002 / 0x0202 %QW2
0x0003 / 0x0203 %QW3
0x0004 / 0x0204 %QW4
Fig. 3-25: Example of a process output image
Output modules
Process output image
(Word)
MODBUS addresses
Word1
Word2
Word1
Word2
Highbyte Lowbyte
Process input image
(Word)
MODBUS addresses
Word1
0x0200 %QW0
Word2
0x0201 %QW1
0x0202 %QW2
Word1
0x0203 %QW3
Word2
0x0204 %QW4
Highbyte Lowbyte
Process output image
(Bit)
MODBUS addresses
0x0000 / 0x0200 %QX4.0
0x0001 / 0x0201 %QX4.1
Process input image
(Bit)
MODBUS addresses
0x0200 %QX4.0
0x0201 %QX4.1
AO
DO
Ethernet
ON
LINK
TxD/RxD
ERROR
750 - 501 550
Bit 1
Word1
Word2
Bit 2
DO: Digital Output
AO: Analog Output
(0x0200)
hex
AO
550
Word1
Word2
Modular I/O System
ETHERNET TCP/IP
G012925e