11.3 Communication Port Information
109
Set Clock to Model 1201B or 1201C
Command:
n,1201XZ
Sending the 0,1201XZ command sets the model to 1201B. Sending the 1,1201XZ command sets the model
to 1201C.
11.3
Communication Port Information
Table 11.6 gives a list of functions and associated pins for both the RS-232 and RS-485 ports.
Pin No.
Function
Pin No.
Function
1
Not Connected
6
RS-232 Input
2
RS-232, Rx Data
7
Not Connected
3
RS-232, Tx Data
8
RS-422/485, Tx-A
4
RS-232 Output/Prog Pulse
9
RS-422/485, Tx-B
5
Ground
–
–
Table 11.6: Main RS-232 Port Pin Definitions
NOTE: pins 6 to 9 are not connected on COM2.
11.4
Custom Broadcast String Reference
11.4.1
Installing a Custom String
Command: @@
A . . . ,
@@
B . . .
The 1201B/C is able to store two custom strings for broadcasting: Custom A and Custom B. Custom A
may be broadcast from COM1 and Custom B from COM2. Use the @@A . . . command to create a Custom
A string, and the @@B . . . command to create a Custom B string. Available characters and controls that
may define these strings are listed in Table 11.7, followed by custom string examples.
11.4.2
Start Custom Broadcast
Command:
B9, O9
B9 activates the Custom A string broadcast from the COM1 serial port; O9 activates the Custom B string
broadcast from the COM2 serial port. Use the B0 and O0 commands to stop the broadcast (see Sec-
tion 11.2.2).
11.4.3
Return Custom String
Command:
UB, UO
Use the UB command to return the Custom A string definition, and use the UO command to return the
Custom B string definition.
Summary of Contents for 1201B
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Page 153: ...B 7 Four Fiber Optic Outputs 135 Figure B 4 Jumper Locations ...