YOKOGAWA UP55A - Page 433

17-30
IM 05P02C41-01EN
NumberofPin Singnalname Description
1 VP +5V bus power
2 RxD/TxD-P Data signal (positive data receive/transmit)
3 RxD/TxD-N Data signal (negative data recive/transmit)
4 DGND Signal ground
5 SHIELD Shield ground
TerminatingResisterofBus
VP
RxD/TxD-P
Data line
Data line
390Ω
220Ω
390Ω
RxD/TxD-N
DGND
PROFIBUS-DPcommunicationconnectorandLED
CHK
1
2
3
4
5
RDY
ERR
LED Lit Unlit
CHK (red) Userproleerror Normal
RDY (green)
Normal.
Communicating successfully.
No electricity, or Communication
failure
ERR (red)
Not connected, or communication
failure(ashing)
Normal
Modbusmasterwiring
Modbus master wiring is same as RS-485 communication wiring for Ethernet-serial
gateway function.
17.4Wiring