A-18  Serial Communications 
DC590+ Series DC Digital Drive 
List of PNO Assignments 
The serial link parameter numbers (PNO) include dedicated parameters, and also 16 configurable parameters. These vary 
with each Drive type. 
590+ and 590+DRV 
The 16 configurable parameters have PNO's 112 to 127. These can be made to point to any TAG number, either via the 
MMI (PNO CONFIG), or via the serial link. 
PNO's 96 to 111 are pointers associated with PNO's 112 to 127. 
For example: 
If PNO 96 = 123, then PNO 112 will access TAG number 123. 
If PNO 100 = 234, then PNO 116 will access TAG number 234 
Enquiry Polling 
In Enquiry Polling mode, block 1 is polled.