Example Of A Process Output Image - WAGO 750 Series Manual

3.1.5.3 Example of a Process Output Image

The following figure is an example of a process output image. The
configuration includes 2 digital and 4 analog outputs. Therefore, the process
image has a total data length of 5 (4 words for the analog data and 1 word for
the digital outputs). When using MODBUS protocol, output data can be read
back with an offset of 200
Note
All output data over 256 words can be read back with an offset of 1000
(0x1000) added onto the MODBUS address.
0x0000 / 0x0200 %QW0
0x0001 / 0x0201 %QW1
0x0002 / 0x0202 %QW2
0x0003 / 0x0203 %QW3
0x0004 / 0x0204 %QW4
Fig. 3-7: Example of a Process Output Image
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
Ethernet
ON
LINK
TxD/RxD
ERROR
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
Fieldbus Controller 750-841
(0x0200) added to the MODBUS address.
hex
AO AO
DO
750 - 501 550 550
Bit 1
Word1
Word1
Word2
Bit 2 Word2
DO: Digital Output
AO: Analog Output
• 49
Process Image
hex
G012925e