I am converting a Westinghouse Numa-Logic program using a printout to AB RS Logix 5000. I do not have a Numa Logic manual.

The following function block I cannot figure out.

"SL" It as 3 logic inputs a starting register and a number of registers value (1 in my case)
Is this a bit shift function?
How does it work?

Other functions I think I have figured out are as follows: (If i am wrong please let me know)
EQ operand 1 equals operand 2
GE operand 1 is greater than/equal to operand 2
MV move - copy operand 1 to operand 2
AD add operand 1 to operand 2 & place in dest.
UC Up counter to present value
top input controls count/bottom resets
DC Down counter - same logic controls
AM Not sure - looks like a multiple register copy command.

Kevin Case
A virginia PLC programmer

 

SL/SR are shift left/right register instructions with carry delivered to the output coil. Registers can be chained up to 128 HR's or 32 OR's in length. AM logically AND's a pair of matrices on a bit-by-bit basis.

I've got an old PC-700/900 programming manual if you're interested. Contact me at [email protected]