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CL4424 User’s Manual
6/21/2005 8
RS-232 Pin Assignments
Figure 2- RS-232 CL4424 Back View
RS-485 (2-wire Half Duplex) Terminal Block Pin Assignments
Figure 3- RS-485 CL4424 Back View
Note: Standard power is applied through the power connector. Alternative power is available via
the terminal block pins.
Pin Description
Input /
Output
1
DCD
O
2TxD O
3RxD I
4DSR O
5GND
6DTR I
7CTS O
8RTS I
9 RI O
Pin Description
1
VCC (6
18V)(125 mA max)
2 485-
(
485B
)
3 No Connect
4 No Connect
5 485+
(
485A
)
6GND
16
Power Connector
Terminal Block
Power ConnectorDB9 Male Connector
15
69