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1-8. Connection
To connect the devices to the S-BUS line, see the system configuration of Section 1-2 and following
precautions.
Precautions for connection
. The cable length of one S-BUS line is a maximum of 500 m (when a BELDEN 8281 or the equivalent
is used).
. The T bridge attached to the last machine of the S-BUS line is always terminated with a 75Z termina-
tor.
. The devices of the secondary station can be connected to the A, B, or C connectors of REMOTE 1.
For the fast-response communication, connect the devices as follows:
Connector A:
Connector B and C: Remote control units
. Set the switch on the CPU-256 board as follows:
For the main board :
For the backup board : Set S8 to B side.
. Turn off the power before the cable is connected to the MAIN-BACKUP connector.
. Use the specified cable for the MAIN-BACKUP connector.
The connector has a pin for the power supply connection. If the specified cable is not used, an IC link
on the CN-1515 board will short out.
n
If the IC link shorts out, be sure to replace it with the specified IC link described in the Maintenace
Manual.
. Prepare the T bridge and a coaxial cable and use them as follows for the dual-controller by using the
main BKPF-R70 and the backup BKPF-R70.
BKPF-R70
(Rear panel)
<Main BKPF-R70>
BKPF-R70
Routing switchers
Set S8 to A side.
REMOTE1
(BNC connector, male)
BELDEN 8281 cable
(shorter than 50 cm)
<Backup BKPF-R70>
T bridge (B)
<Secondary device>
1-8. Connection
1-11 (E)
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