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RS-422 and RS-232C Cable
Connecting Link Adapter
AL004-(P)E
Host computer
1
FG
7
SG
2
SD
3
RD
Wiring RS-232C and RS-422 Cable Connectors
Cable Preparation
1, 2, 3...
When using a Link Adapter, connect both RS-232C and RS-422 cable straight
across, as shown in the following diagram. Here the SD terminal of the host com-
puter, for example, is connected to the SD terminal of the Link Adapter. See 5-4
Link Adapter AL004-(P)E for the internal configuration of the Link Adapter.
Link Adapter
AL004-(P)E
FG
1
SG
7
SD
2
RD
3
Prepare cables as follows before soldering:
1. Cut the cable to the required length.
2. Thread the end of the cable through a boot at least 50 mm up the cable.
3. Being careful not to damage the braiding underneath, use a razor blade to
cut away 25 mm of sheath for an RS-442 cable or 40 mm for an RS-232C
cable.
4. Using scissors, cut away all but 10 mm of the exposed braiding.
5. Using wire strippers, remove the covering from the last 5 mm of all wires.
6. Move the boot to the cut edge of the sheath and fold the braiding back over
the end of it.
7. Wrap aluminum foil tape 1 1/2 turns over the top of the braiding on top of the
boot.
7
FG
3
SG
9
SDA
5
SDB
6
RDA
1
RDB
Section
2-2
Host Link Unit
FG
7
SG
3
SDA
9
SDB
5
RDA
6
RDB
1
7
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