Toshiba GR200 Series Instruction Manual page 938

2. Troubleshooting
Phenomena
No
.
1 Communicati Address setting is incorrect.
on trouble
(IEC103
communicati
on is not
Transmission
available.)
setting is incorrect.
Start bit, stop bit and parity
settings of data that BCU
transmits to relay is incorrect.
RS485 or optic cable
interconnection is incorrect.
The setting of converter is
incorrect. (RS485/optic
conversion is executed with
the transmission channel,
etc.)
The relationship between
logical "0/1" of the signal and
Sig.on/off is incorrect. (In the
event of using optic cable)
Terminal
provided. (Especially when
the RS485 cable is long.)
Table 5-2.1
Supposed causes
baud rate
resistor is not
- 924 -
Check / Confirmation
Object†
Match address setting between BCU
BCU and relay.
RY Avoid duplication of address with
other relay.
BCU Match transmission baud rate
setting between BCU and relay.
RY
Go over the following settings via
the BCU. Relay setting is fixed in
accordance with the following
settings.
BCU
- Start bit: 1bit
- Stop bit: 1bit
- Parity setting: even‡
- Check the connection port.
- Check the interconnection for
Cable RS485 A/B/COM
- Check the send and received
interconnection for the optic cable.
In the event of using G1IF2, change
the DIPSW setting in reference to
Conver
INSTRUCTION MANUAL
ter
(6F2S0794).
Check the following;
Logical0 : Sig.on
BCU
Logical1:Sig.off
Add terminal resistor (150[ohms]) to
cable both ends of RS 485 cable.
Centralized GRB200
(Soft: 030, 031, 032, 033, 034)
6F2S1931 (0.20)
Procedure