Transmitting process data
Process image of the modular system
9
Networking via system bus (CAN)
9.4
9.4.5
l
9.4-5
EDSPM-TXXX-3.0-04/2004
9.4.5 Process image of the modular system
The process image of themodular system is explained on thebasis of thefollowing
example. In addition to the CAN gateway, maximally 32 modules can be
connected.
Module
L
0
1
L L L L
EPM – T211
L L L
L
EPM – T211
L
CAN
Gateway
8×DI 8×DI 8×DI 8×DI 16×DI 8×DO 4×AI 2/4×
Counter
SSI
interface
1×counter
/ 16×DI
4×AI/AO
– –
Process
data
– 1byteTX 1byteTX 1byteTX 1byteTX 2bytes
TX
1byteRX 8bytes
TX
10 bytes
TX
10 bytes
RX
4bytesTX
4bytes
RX
6bytesTX
6bytes
RX
4bytesTX
4bytes
RX
Module
No.
M0 M1 M2 M3 M4 M5 M6 M7 M8 M9 M10 M11 ... M32