2 load cells, 3 serial communications, Load cells – Rice Lake SURVIVOR LV Series Livestock Ring Scale User Manual

Page 12: Serial communications

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590 AG Indicator Operators Manual

2.3.2

Load Cells

To attach cable from a load cell or junction box, remove connector J1 from the board. The connector plugs into a
header on the board. Connect cable from the load cell or junction box through the load cell cable cord grip to
connector J1 as shown in Table 2-1. If using 6-wire load cell cable (with sense wires), remove jumpers JP1 and JP2
before reinstalling connector J1 (see Figure ). For 4-wire installation, leave jumpers JP1 and JP2 on.

When connections are complete, reinstall connector J1 on the board.

Table 2-1. J1 Pin Assignments

J1 Pin

Function

1

+SIG

2

–SIG

3

+SENSE

4

–SENSE

5

SHIELD (see NOTE below)

6

+EXC

7

–EXC

Note

SHIELD wire connection is not used. Use grounding procedure described in Section 2.3.1.

For 6-wire connections, remove jumpers JP1 and JP2.

D

A

B

Indicator

A

D

C

B

Scale

A -EXC Black
B +SIG Green
C +EXC Red
D -SIG White

Connector

C

Figure 2-3. Scale/Indicator System Connection

2.3.3

Serial Communications

To attach serial communications cables, remove connector J2 from the board (see Figure 2-4). Connect
communications cable through cord grip to connector J2 as shown in Table 2-2.

Once cables are attached, reconnect J2 to the header on the board.

The 590 AG Indicator serial port supports full duplex RS-232 communications for connections to printers, PCs,
and other attached devices. See Section 3.0 for general configuration information; see Section 3.2.4 for serial port
configuration.

Table 2-2. J2 Pin Assignments

J2 Pin

Function

1

RS-232 TxD

2

RS-232 Ground

3

RS-232 RxD

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