Table 17 - Pc Cable Pinouts; Figure 50 - Null Modem Cable Construction - Honeywell HC900 Installation And User Manual

Communications Installation - Connecting the HC900 Controller to a PC with the Hybrid Control Designer Software
RS-232 Direct Link to PC Configuration Tool
The Controller can be connected directly to the PC, in which case a Null Modem Cable is required. The
Null Modem cable is available from Honeywell (Part # 51404755-501) or from third-party suppliers, or can
be fabricated by the user. The Null Modem construction is shown in Figure 50 - Null Modem Cable
Construction. Cable Pinouts are shown in Table 17 - PC Cable Pinouts.
90

Table 17 - PC Cable Pinouts

Configuration Connector Pinouts
(For Null Modem Cable)
Signal Name
DCD
RXD
TXD
DTR
GND
DSR
RTS
CTS
RI

Figure 50 - Null Modem Cable Construction

HC900 Hybrid Controller Installation and User Guide
Terminal No.
1
2
3
4
5
6
7
8
9
Revision 5
9/03