Rockwell Automation 57C422B 2 Axis Servo Module - Manual (Page 45)

PROGRAMMING 4-17
position registers is changed, the "position >=" and "position
<" bits in register 72 are undefined until another "define sync
position" command is issued. The sync position will be
compared to the actual current feedback position, an internal
value (not registers 74/75). The units are encoder counts.
Refer to figure 4.22.
4.24 Register 31: Maximum Voltage
Reference
Register 31 limits the maximum voltage reference to the
drive. This value should be set prior to outputting any
reference to the drive.
The value in register 31 is read by the module whenever the
"change default setups" command in register 66 is issued.
The value may range from 0 to 1984, corresponding to an
output range of 0 to 10 volts. Refer to figure 4.23.
Figure 4.22 – Sync Position Registers
CAUTION
ALWAYS PLACE A LIMIT ON THE MAXIMUM VOLTAGE
REFERENCE TO THE DRIVE. FAILURE TO OBSERVE THIS
PRECAUTION COULD RESULT IN DAMAGE TO OR
DESTRUCTION OF THE EOUIPMENT.