Marathon Computer UNIPRO V3.5 - Manual (Page 186)

Maintenance and Troubleshooting
Unipro 3.5
Rev. 8.00
November 30, 1995
K k Event
Outputs
L
l Program
Number
M
m Mode
N n Program Step
Number
P
p Proportional
Band
Q
q Memory
Update
R
r Remote
Program Access
S
s Setpoint
* t Temperature
U u Status
V v % Output
X x Parameters**
Z z
Communications mode
* w Read DIP
Switches
* Update Not Allowed
** See X Protocol Section
OPTOMUX Protocol
The OPTO 22 format is RS-422, Full-Duplex, 1200 BAUD, 8
bit, no parity, and 1 stop bit. The message format follows the
OPTOMUX two pass protocol. The UNIPRO sends messages
to set up the events board per the events partition, activate the
appropriate outputs, and reads the input conditions. The
UNIPRO initiates messages on this buss and waits ½ second for
a reply.