Appendix 1: GPIO/RS232/1-Wire Data Cable Connection

A 16-position terminal is used for GPIO and serial connections.

GPIO Block Pin	Signal	Name

GPIO Block Pin	Signal	Name
1	INPUT1	Single Ended Input 1
2	INPUT2	Single Ended Input 2
3	INPUT3	Single Ended Input 3
4	INPUT4	Single Ended Input 4
5	VCC	Power (Power supply output – fused)
6	1-Wire Signal	1-Wire Signal
7	1-Wire LED -	Negative indicator for 1-Wire
8	RS232	Serial RxD (Receive)
9	DOUT1	Output 1
10	DOUT2	Output 2
11	DOUT3	Output 3
12	DOUT4	Output 4
13	GND	Common Ground for Power
14	GND	Common Ground for Power
15	1-Wire LED +	Positive indicator for 1-Wire
16	RS232	Serial TxD (Transmit)

Item Description	Part Number

Item Description	Part Number
CTM-500 GPIO cable, 15ft	11220.2012
CTM-500 Serial GPIO cable DB9 null male, 15ft	11220.2013
CTM-500 Serial DB9 female, 15ft	11220.2014