Watlow 8PID Controller - Manual (Page 53)

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3.8 WRITING ALL OUTPUT LINES
All 16 possible output Lines may be set or cleared simultaneously with one command.
The desired level of each line [1=High(ON) 0=Low(OFF)] is represented by one bit in a
hexadecimal byte representing each four-line group. Refer to Section 3.10 for further
explanation of this compressed data format.
To set the level of all output lines with one command:
XOF (abcd) O is the Output indicator
F is the Fast write indicator
a is the value for output lines 15-12
b is the value for output lines 11-08
c is the value for output lines 07-04
d is the value for output lines 03-00
Example:
Command : XOF0000 Set all outputs low (off).
Response: XOF0000
Command : XOF1111 Set lines 12, 08, 04, and 00 high (on).
Response: XOF1111
Example Command Construction:
ƒ Turn ON Lines 15, 14, 13, 12, 09, 04, 02
ƒ Turn OFF Remaining Lines
I/O Line Nr | 15 14 13 12 | 11 10 09 08 | 07 06 05 04 | 03 02 01 00
Binary Value | 1 1 1 1 | 0 0 1 0 | 0 0 0 1 | 0 1 0 0
Hex Value | F | 2 | 1 | 4
Dec Value | 15 | 2 | 1 | 4
ASCII Char | ? | 2 | 1 | 4
Resulting Command: XOF?214