Wiring; Profibus Cable Wiring; Terminator Switch - Mitsubishi A1SJ71PB92D User Manual

5. PROCEDURES BEFORE SYSTEM OPERATION
5.5

Wiring

5.5.1
This section explains the wiring to PROFIBUS connector for the AJ71PB92D/A1SJ71PB92D
(1) Pin assignments for the connector
Pin No.
1
2
3
4
5
6
7
8
9
(2) Wiring
Remark
•
To apply to the EMC standard:
Read the Section for the Installation in the A1S/A2SCPU User's Manual (Hardware) (after the IB-
66468-E)
•
Please use the PROFIBUS cable with braided shield.
5.5.2
(1) Whether or not to set the built-in module terminal resistance (1/2W 220 Ω x 2 units) can be
selected by connecting a switch. (The stations on both ends of the PROFIBUS segment must be
connected with terminal resistor.)
TERMINATOR
(2) When the AJ71PB92D/A1SJ71PB92D's bus termination switch is set to on (has terminal
resistor), do not remove the PROFIBUS cable from the AJ71PB92D/A1SJ71PB92D during
PROFIBUS-DP network operation. If the cable is removed, then the terminal resistor in the
network will disappear, causing an error and bringing down the network.

PROFIBUS cable wiring

Symbol Name
SHIELD
RP
B/B' RxD/TxD-P
CNTR-P
C/C' DGND
VP
RP
A/A' RxD/TxD-N
CNTR-N
*1: Signal is optional.
*2: When the terminal resistance value of building into is made it is, signal is used.
Wiring is not needed.
A1SJ71PB92D
1
SHIELD
3
RxD/TxD-P
8
RxD/TxD-N

Terminator switch

Silk display
Application
Shield, Protective Ground
*1 Reserved for Power
Receive/Transmit Data-P
*1 Control-P
Data Ground
*2 Voltage-Plus
*1 Reserved for Power
Receive/Transmit Data-N
*1 Control-N
PROFIBUS cable
ON
Connects terminals resistor
5-7
MELSEC-A
OFF
Disconnects terminal resistor
(setting at time of shipment)