WAGO 750-830 Manual page 60

60 • BACnet/IP Controller 750-830
Process Image
3.1.5.3 Example of an Output Data Process Image
The following example for the output process image comprises 2 digital and 4
analog outputs.
It comprises 4 words for the analog outputs and 1 word for the digital outputs,
i.e. 5 words in total.
In addition, the output data can also be read back with an offset of 200
(0x0200) added to the MODBUS address.
Note
All output data greater than 256 words and therefore located in the memory
range 6000
of 1000
0x0000 / 0x0200 %QW0
0x0001 / 0x0201 %QW1
0x0002 / 0x0202 %QW2
0x0003 / 0x0203 %QW3
0x0004 / 0x0204 %QW4
Fig. 3-7: Example of process image for output data
(0x6000) to 66F9
hex
(0x1000) added to the MODBUS address.
hex
ETHERNET
LINK
MS
NS
TxD/RxD
I/O
USR
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
(0x66F9) can be read back with an offset
hex
AO AO
DO
750 - 501 550 550
Bit 1
Word1 Word1
Word2
Bit 2 Word2
DO: Digital Output
AO: Analog Output
hex
G015025e
WAGO-I/O-SYSTEM 750
BACnet/IP Controller