maxPAC Hardware Reference Guide
Metso Automation MAX Controls Inc.
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277596
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1-10
Interconnecting Adjacent I/O Chassis
Use a ribbon cable to interconnect in daisy chain style two or more adjacent
I/O chassis assemblies in the same maxDNA I/O cabinet group. One end of
the ribbon cable plugs into P10 of the first I/O in the string. The other end of
the ribbon cable connects to P9 of the next I/O in the string. Continue this
P10 to P9 sequence until the last I/O in the string is reached. See Figure 1-5.
If the I/O bus connection continues to the rear of the cabinet, or to an
adjacent cabinet in the same cabinet group, the ribbon cable connection can
made to the connectors located on either side of the backplane to minimize
the cable length. The ribbon cable connectors are keyed. The red line in the
ribbon cable should match the pin 1 marking in the connector
Depending on the spacing between maxPAC chassis, the following ribbon
cable lengths are available:
Part Number Description
CPO301
10 inches - 0 rack units between racks
CPO303
12 inches - 1 rack unit between racks
CPO304
14 inches - 2 rack units between racks
CPO305
26 inches - 10 rack units between racks
For I/O bus connections to a cabinet outside the cabinet group, use a 7-foot
cable (CPO307), a 15-foot cable (CPO315), or a special length cable.
The maximum number of modules supported by the DPU4E within a cabinet
or cabinet pairs is 60 maxPAC modules. This number of modules is reduced
when the I/O bus is extended to other cabinets. A bus terminator (CPO402)
must be installed at the end of the I/O bus connection.
For applications that require I/O bus connections between Model 564 I/O
racks and maxPAC racks, the following cables are available:
Part Number Description
CPO504
13 inches - 2 rack units between racks
CPO507
7 feet
CPO515
15 feet