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SRC-32 Installation and Operation Manual

INSTALLATION

Pair Mode

The SRC-32 can be used to transmit the outputs from one unit to another over a seri-

al connection. The logical sense of the inputs is inverted when written to the outputs

of its corresponding unit. Normally inputs are high and when closed go to a logic 0

when in pair mode. When logic 0 is received, it will write logic 1 to the output.

This allows the relays connected to outputs 1-8 to come on if its corresponding input

is closed. Multiple units can also be set up to communicate with the same number

of units on the other end of a data link. All units must have DIPswitches 5 and 6

turned on and the unit addresses must have a corresponding unit on the other end of

the link set to the same address. For example, if you have two units on each side set

to address 0 and 2, then the two units on the other side of the data link must also be

set to 0 and 2. All units will automatically transmit the states of their inputs on

power up, every ten seconds and when any input changes states. If a unit does not

receive an update from its corresponding paired unit for a period of 20 seconds, its

LCD display will begin to flash “COM - FAILURE”. As soon as communications

is restored, the “COM – FAILURE” message will clear.

Command Additional Data Bytes Function

SRC-32 Binary Commands:

40h RS-232 timer off

41h RS-232 timer on

42h Set serial speed to 2400

43h Set serial speed to 9600

44h Set serial speed to 19200

45h Set serial speed to 38400

46h Enable error & good responses

47h Disable error & good responses

48h N Latch output n (00 – 1F)

49h N Unlatch output n (00 – 1F)

4Ah Nt Pulse output n (00 – 1F),

t= time (1-63h =.1 - 9.9sec)

4Bh N Poll output n (00 – 1F) (see 55h)

4Ch N Poll input n (00 – 1F) (see 55h)

4Dh All Output status request (see 52h)

4Eh All Input status request (see 53h)

4Fh Unit version request (see 54h)

Special Binary Commands for Modem Operation:

Future feature Load AT command string for modem init.

Future feature Load Telephone number for modem to dial if master

Future feature Request for stored AT command (56h response)

Future feature Request for stored telephone number (57h response)

Binary Output Response from SRC-32:

60h nnn…n Load AT command string for modem init. (Future feature)

61h nnn…n Load Telephone number for modem to dial if master

(Future feature)

62h Request for stored AT command (56h response) (Future feature)

63h Request for stored telephone number (57h response) (Future

feature)

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