Toshiba GR200 Series Instruction Manual page 1474

2. Troubleshooting
No. Phenomena
Communicati
on trouble
(IEC103
communicati
on is not
available.)
1
Supposed causes
Address setting is incorrect.
Transmission baud
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 resistor
provided. (Especially when
the RS485 cable is long.)
Table 5-2.1
Object†
Match address setting between BCU
BCU
RY Avoid duplication of address with
rate 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
- Check the send and received
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
is not Add terminal resistor (150[ohms]) to
cable both ends of RS 485 cable.
- 1453 -
6F2S1915 (0.46)
Check / Confirmation
Procedure
and relay.
other relay.
RS485 A/B/COM
interconnection for the optic cable.
GRZ200 (Soft 031 & 032)