Siemens Simatic S7 Series System Manual page 194

Program instructions
7.4 Compare
Input / output Data type
IN1, IN2 BYTE
INT
DINT
REAL
OUT BOOL
194
Operand
IB, QB, VB, MB, SMB, SB, LB, AC, *VD, *LD, *AC, Constant
IW, QW, VW, MW, SMW, SW, T, C, LW, AC, AIW, *VD, *LD, *AC, Constant
ID, QD, VD, MD, SMD, SD, LD, AC, HC, *VD, *LD, *AC, Constant
ID, QD, VD, MD, SMD, SD, LD, AC, *VD, *LD, *AC, Constant
LAD: Power flow
FBD: I, Q, V, M, SM, S, T, C, L, Logic Flow
System Manual, 09/2015, A5E03822230-AC
S7-200 SMART