IBM 7012 397, Site And Hardware Planning Information

Page: 142 / 415

Connecting an HMC to Bulk Power Controllers
One HMC can connect to 8 BPCs (four racks with two BPCs each). The following features are used to
connect an HMC BPCs.
v FC 2943, 8-Port Asynchronous Adapter with 8-port connector box - adapter connects in an HMC, ports
in connector box connect to FC 8122 or 8123. Two cables are required per rack for connection to BPC.
v FC 8122, Attachment Cable, HMC to BPC, 6 M (19.7 ft.) - connects from FC FC2943 8-port connector
box to BPC
v
FC 8123, Attachment Cable, HMC to BPC, 15 M (49.2 ft.) - connects from FC FC2943 8-port connector
box to BPC
The following illustrations provide additional information about the connections between the HMC and the
BPCs.
HMC
To BPC
25-Pin
(part of FC 8122 or 8123) D-Shell Female Connector
25-Pin D-Shell Male Connector
(part of FC 2943 8-Port Connector Block)
FC 2943
8-Port Asynchronous Controller
8-Port Connector Block
(part of FC 2943)
FC 8122, 6M (19.7 ft.)
or
FC 8123, 15 M (49.2 ft.)
HMC to BPC Cable
(up to 8)
R 422 Cable
FC 8122, 6M (19.7 ft.)
or
FC 8123, 15 M (49.2 ft.) S
To BPC
(2 per rack,
up to 4 racks)
25-Pin D-Shell Female Connector
(part of FC 8122 or 8123)
Detail of R 2 Cable Connection S42
HMC to Bulk Power Controller (BPC) - R 22 Connection S4
R 2
Cable Connection
S42
To FC 2943
Adapter in HMC
124
Site and Hardware Planning Information