Rice Lake Condec UMC600 - Manual (Page 14)

Installation and Wiring 11
2.11.2 Serial Port #2 Wiring: CPU KGR8924–1
Serial port #2 supports simplex (output only) RS-232, or 20mA current loop (active or passive). The following chart
illustrates Serial Port 2 pin assignments.
2.12 Digitial I/O Wiring
The standard unit has four outputs for setpoint and zero band control and four discrete inputs that allow the zero,
net/gross, and print function to be operated remotely by contact closure of these inputs to digital ground. Wire any
active digital input and outputs to connector TB3 on the CPU board. Table 2-4 shows the digital I/O assignments for
the TB3 connector and their description.
Inputs 7 through 10 allow the zero, net/gross, tare, and print functions to be operated remotely by contact closure of
these inputs to digital ground.
Port Connector/Pin # RS-232 20mA Current Loop
2 TB2 - 1 TxD
2 TB2 - 5 GND
TB2 - 6
2 TB4 - 1 +20mA TX+ OUT (passive)
2 TB4 - 2 -20mA TX- OUT (active)
TB5 - 3 +20mA TX+ OUT (passive)
TB5 - 4 -20mA TX- OUT (passive)
Table 2-3. TB2, TB4, TB5 Pin Assignments (Serial Port #2 Communications)
TB3 Pin Signal Description
Outputs
1 +5 VDC
2 DIG OUT 4 Dribble control assigned to setpoint 2 (defined in parameter 11), or a zero band output
when parameter 12 is selected for 1-50.
3 DIG OUT 3 Setpoint 2 output (defined in parameter 11).
4 DIG OUT 2 Dribble control assigned to setpoint 1 (defined in parameter 11).
5 DIG OUT 1 Setpoint 1 output (defined in parameter 11).
Inputs
Normal Mode Batch Mode
6 GND
7 DIG IN 4 Net/gross Abort
8 DIG IN 3 Zero Zero
9 DIG IN 2 Tare Start Batch
10 DIG IN 1 Print Print
Table 2-4. TB3 Pin Assignments (Digital I/O)