2. Programming Concepts
2-25
Special
M
Function
ES2
EX2
SS2 SA2 SX2
OFF
Ø
ON
STOP
Ø
RUN
RUN
Ø
STOP
Attrib.
Latch
-ed
Default
M1274
C239 counting mode (ON: falling-edge
count)
○ ○ ○ ○
OFF - - R/W NO OFF
M1275
C240 counting mode (ON: falling-edge
count)
○ ○ ○ ○
OFF - - R/W NO OFF
M1276
C241 counting mode (ON: falling-edge
count)
○ ○ ○ ○
OFF - - R/W NO OFF
M1277
C242 counting mode (ON: falling-edge
count)
○ ○ ○ ○
OFF - - R/W NO OFF
M1280*
For I000 / I001, reverse interrupt trigger
pulse direction (Rising/Falling)
○ ○ ○ ○
OFF OFF - R/W NO OFF
M1284*
For I400 / I401, reverse interrupt trigger
pulse direction (Rising/Falling)
○ ○ ○ ○
OFF OFF - R/W NO OFF
M1286*
For I600 / I601, reverse interrupt trigger
pulse direction (Rising/Falling)
○ ○ ○ ○
OFF OFF - R/W NO OFF
M1303
High / low bits exchange for XCH
instruction
○ ○ ○ ○
OFF - - R/W NO OFF
M1304*
Enable force-ON/OFF of input point X
○ ○ ○ ○
OFF - - R/W NO OFF
M1305
Reverse Y1 pulse output direction in high
speed pulse output instructions
○ ○ ○ ○
OFF OFF - R/W NO OFF
M1306
Reverse Y3 pulse output direction in high
speed pulse output instructions
○ ○ ○ ○
OFF OFF - R/W NO OFF
M1307
For ZRN instruction, enable left limit
switch
○ ○ ○ ○
OFF OFF - R/W NO OFF
M1308*
Output specified pulses or seek Z phase
signal when zero point is achieved.
○○○○
OFF OFF OFF R/W NO OFF
M1312
For COM1(RS-232), sending request
(Only applicable for MODRW and RS
instruction)
○ ○ ○ ○
OFF OFF - R/W NO OFF
M1313
For COM1(RS-232), ready for data
receiving (Only applicable for MODRW
and RS instruction)
○ ○ ○ ○
OFF OFF - R/W NO OFF
M1314
For COM1(RS-232), data receiving
completed (Only applicable for MODRW
and RS instruction)
○ ○ ○ ○
OFF OFF - R/W NO OFF
M1315
For COM1(RS-232), data receiving error
(Only applicable for MODRW and RS
instruction)
○ ○ ○ ○
OFF OFF - R/W NO OFF
M1316
For COM3(RS-485), sending request
(Only applicable for MODRW and RS
instruction)
○╳○╳
OFF OFF - R/W NO OFF
M1317
For COM3(RS-485), ready for data
receiving (Only applicable for MODRW
and RS instruction)
○╳○╳
OFF OFF - R/W NO OFF
M1318
For COM3(RS-485), data receiving
completed (Only applicable for MODRW
and RS instruction)
○╳○╳
OFF OFF - R/W NO OFF
M1319
For COM3(RS-485), data receiving error
(Only applicable for MODRW and RS
instruction)
○╳○╳
OFF OFF - R/W NO OFF
M1320*
For COM3 (RS-485), ASCII/RTU mode
selection. (OFF: ASCII; ON: RTU)
○╳○╳
OFF - - R/W NO OFF
