CHAPTER 4
–
DATA COMMUNICATIONS INTERFACE
32
MultiLoad II/ RCU II Explosion Proof Lite (EXL) Installation Guide - Part # 6070
4.2.3.1
COM2
–
RS232 - Host Ticket Printer/Data Logger
A Ticket Printer or Data Logger can be connected to the MultiLoad II/ RCU II via RS232 on COM
2.
The TX and RX are swapped at the MultiLoad II/ RCU II.
Handshake lines MUST be connected or terminated, or a printer error will be reported.
MultiLoad II/ RCU II will monitor CTS, DSR and DCD for active signals.
Figure 4.9
Ticket Printer / Data Logger Connections with Handshake
Figure 4.10
Ticket Printer / Data Logger Connections without Handshake
When Print or Alibi Log is configured to be on COM 2, the CTS handshake line MUST be
connected, or a printer error will occur, preventing loading.
MultiLoad II/
RCU II COM 2
Printer/ Logger RS232
DB25 Connector
RX
CTS
TX
GND
DSR
(N/C) DCD
(N/C) RTS
(N/C) DTR
2
– TX
20 - DTR
3
– RX
7
– GND
4
– RTS
5
– CTS (N/C)
6
– DSR (N/C)
8
– DCD (N/C)
MultiLoad II/
RCU II COM 2
Printer/ Logger RS232
DB25 Connector
RX
CTS
TX
GND
DSR
(N/C) DCD
(N/C) RTS
(N/C) DTR
2
– TX
20 - DTR
3
– RX
7
– GND
4
– RTS
5
– CTS (N/C)
6
– DSR (N/C)
8
– DCD (N/C)