INSTALLATION, CONT.
Serial I/O Cable Installation
The 225 may be connected to a printer to record weight and associated data or it may be
connected to a remote display or even to a computer for transmission of weight data. The
weight data may be transmitted on demand (pressing the PRINT key or on receipt of a
command from the computer).
1. If the rear panel of the indicator has been removed, proceed to step 2. Otherwise, remove
the 14 acorn nuts securing the rear panel to main housing
2. Loosen the gland connector for the serial cable. Refer to Figure No. 2 for the gland
connector layout.
3. Slip the serial cable through the gland connector and into the enclosure.
4. Referring to Figure No. 4, remove 2 inches (not 5 to 6 inches) of the outer insulation jacket
5. Next, remove 1/4 inch of insulation from each of the wires.
6. Connect each of the wires to the Serial I/O terminal block (P18) referring to Figure No. 11
for terminal block locations.
7. To terminate a wire, use a small flat blade screwdriver and press down on the release bar
for the terminal. Insert the wire into the terminal opening. Remove the screwdriver,
allowing the release bar to return to its original position, locking the wire in place. See
Figure No. 5.
8. Repeat procedure until all of wires are in place.
PRINTER
COM1 SERIAL
– TERMINAL (P14)
COM2/3 SERIAL – TERMINAL (P18)
UPIN NO.U UFunctionU UPIN NO.U UFunctionU
1
TxDPRINT-RS232
1
TxD2-SRC
2
GND
2
TxD2-20mA+
3
TxD2-20mA-
3
TxD1-SRC
4
RxD2-SRC
4
TxD1-20mA+
5
RxD2-20mA+
5
TxD1-20mA-
6
RxD2-20mA-
6
RxD1-RS232
7
RxD2-RS232
7
TxD1-RS232
8
TxD2-RS232
8
GND
9
GND2
9
CTS
10
RxD3-RS232
11
TxD3-RS232
12
TxD3-20mA active
13
GND3
¾
When connecting a serial printer (using the Cardinal serial data cable, 8539-B108-1A) only
2 wires are used. The RED wire should be connected to Pin 7 (TXD1-RS232) and the
BLACK wire to Pin 10 (GND 1).
8200-M538-O1 y 225 Installation
Page 13
