V
alid
Addressing Modes and File
T
ypes for Instruction Parameters
C–5
Instruction Valid Value
Ranges
Valid File TypesValid Addressing
Mode(s)
Instruction
Parameters
Description
CTD Count Down counter direct C (element level) Not Applicable
preset (contained in the
counter register)
–32,768–32,767
accum (contained in the
counter register)
–32,768–32,767
CTU Count Up counter direct C (element level) Not Applicable
preset (contained in the
counter register)
–32,768–32,767
accum (contained in the
counter register)
–32,768–32,767
DCD Decode 4 to 1 of 16 source direct, indexed direct O, I, S, B, T, C, R, N Not Applicable
destination direct, indexed direct O, I, S, B, T, C, R, N Not Applicable
DDV Double Divide source immediate, direct,
indexed direct
O, I, S, B, T, C, R, N –32,768–32,767
destination direct, indexed direct O, I, S, B, T, C, R, N Not Applicable
DIV Divide source A immediate, direct,
indexed direct
O, I, S, B, T, C, R, N –32,768–32,767
f-min–f-max
source B immediate, direct,
indexed direct
O, I, S, B, T, C, R, N –32,768–32,767
f-min–f-max
destination direct, indexed direct O, I, S, B, T, C, R, N Not Applicable
ENC
Encode 1 of 16 to 4
source direct, indexed direct O, I, S, B, T, C, R, N Not Applicable
destination direct, indexed direct O, I, S, B, T, C, R, N Not Applicable
EQU Equal source A direct, indexed direct O, I, S, B, T, C, R, N Not Applicable
source B immediate, direct,
indexed direct
O, I, S, B, T, C, R, N –32,768–32,767
f-min–f-max
Reference
efesotomasyon.com - Allen Bradley,Rockwell,plc,servo,drive