C Error And Arithmetic Flag Operation - Omron SYSMAC C200HS Operation Manual

The following table shows the instructions that affect the ER, CY, GR, LE and EQ flags. In general, ER indicates
that operand data is not within requirements. CY indicates arithmetic or data shift results. GT indicates that a com-
pared value is larger than some standard, LT that it is smaller, and EQ, that it is the same. EQ also indicates a result
of zero for arithmetic operations. Refer to Section 5 Instruction Set for details.
Vertical arrows in the table indicate the flags that are turned ON and OFF according to the result of the instruction.
Although ladder diagram instructions,TIM, and CNT are executed when ER is ON, other instructions with a vertical
arrow under the ER column are not executed if ER is ON. All of the other flags in the following table will also not
operate when ER is ON.
Instructions not shown do not affect any of the flags in the table. Although only the non-differentiated form of each
instruction is shown, differentiated instructions affect flags in exactly the same way.
The ER, CY, GR, LE and EQ Flags are turned OFF when END(01) is executed, so their status cannot be monitored
with a Programming Console.
Instructions 25503 (ER)
TIM
CNT
1
END(01) OFF
STEP(08) Unaffected
SNXT(09)
CNTR(12)
TIMH(15)
WSFT(16)
CMP(20)
MOV(21)
MVN(22)
BIN(23)
BCD(24)
ASL(25)
ASR(26)
ROL(27)
ROR(28)
COM(29)
ADD(30)
SUB(31)
MUL(32)
DIV(33)
ANDW(34)
ORW(35)
XORW(36)
XNRW(37)
INC(38)
DEC(39)
STC(40) Unaffected
CLC(41) Unaffected
MSG(46)
1
ADB(50)
1
SBB(51)
Appendix C
Error and Arithmetic Flag Operation
25504 (CY)
Unaffected
OFF
Unaffected
Unaffected
Unaffected
Unaffected
Unaffected
Unaffected
ON
OFF
Unaffected
25505 (GR) 25506 (EQ)
Unaffected Unaffected
OFF OFF
Unaffected Unaffected
Unaffected Unaffected
Unaffected
Unaffected
Unaffected
Unaffected
Unaffected
Unaffected Unaffected
Unaffected Unaffected
Unaffected Unaffected
Unaffected
25507 (LE) Page
139
Unaffected
145
OFF 138
Unaffected 266
266
Unaffected 148
143
157
170
Unaffected 159
159
180
181
Unaffected 154
154
155
155
Unaffected 249
Unaffected 205
207
Unaffected 211
212
250
251
252
253
204
204
Unaffected 205
Unaffected 205
Unaffected 278
Unaffected 219
221
449