User Manual - Version 2.1 Owner manual

Counterpart User Manual - Installation 9
2.7 Cable Grounding
Except for the power cord, all cables should be grounded against the scale enclosure. Do the following to ground
shielded cables.
• Use the lockwashers, clamps, and kep nuts provided in the parts kit to
install grounding clamps on the
enclosure studs. Install grounding clamps that will be used; do not tighten nuts.
• Route cables and grounding clamps to determine cable lengths require
d to reach cable connectors. Mark
cables to remove insulation and shield as described below:
• For cables with foil shielding, strip insulation and
foil from the cable half an inch (15 mm) past the
grounding clamp (see Figure 2-3). Fold the foil shield bac
k on the cable where the cable passes through
the clamp. Ensure silver (con
ductive) side of foil is turned outward for contact with the grounding clamp.
• For cables with braided shielding, strip cable insulatio
n and braided shield from a point just past the
grounding clamp. Strip another half inch (15 mm) of insulation only to expose the braid where the cable
passes through the clamp (see Figure 2-3 on page 9).
• Finish installation using cable mounts and ties to secure ca
bles inside of indicator enclosure.
Figure 2-3. Grounding Clamp Attachment for Foil-Shielded and Braided Cabling
2.7.1 Serial Communications
Wire the serial communications cables to J4, which is Port 2 (5-wire RS-232 port). J5 is Port 1 (RS-232 and 20
mA). Connect communications cables to J5 and J4 as shown in Table 2-3.
Use cable ties to secure serial cables to
the inside of the enclosure.
Port 1 supports full duplex RS-232 communications only; Port
2 provides either active 20 mA output or duplex
RS-232 transmission. Both ports are configured using the SERIAL menu. See Section 3.6.5 on page 36.
Table 2-3. J4 and J5 Pin Assignments
An additional port (Port 3) is available if needed through the installation of an option card at J14.
Connector Pin Signal Port
J4
1 +20 mA
2
2 Ground or
-20 mA
3 Tx
4 Rx
5 CTS
6 RTS
J5
1 Ground
1
2 Ground
3 Tx
4 Rx
5 DTR
6 RTS
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