Assignment Of Counter Input Terminal And Switching Of Function - Mitsubishi Electric MELSEC-Q Structured Programming Manual

FXCPU Structured Programming Manual
[Device & Common]
2.7.7

Assignment of counter input terminal and switching of function

The assignment of input terminal and the function of software counters change as shown below when the
following special auxiliary relays are combined.
In a program, put a special auxiliary relay just before a target counter.
FX /FX /FX
0S 0 0N
1. In FX /FX
3U 3UC
Counter No.
C244(OP)
C245(OP)
C248(OP)
C253(OP)
80
/FX /FX /FX /FX /FX
1S 1N 1NC U
PLCs
When using software counter as hardware counter
M8388
EN
CCoil
CC244
K
CValue
M8388
M8391
EN
CCoil
CC245
K
CValue
M8388
M8392
EN
CCoil
CC248
K
CValue
M8388
M8392
EN
CCoil
CC253
K
CValue
/FX /FX PLCs do not support this function.
2C 2N 2NC
M8390
OUT_C_32
ENO
OUT_C_32
ENO
OUT_C_32
ENO
OUT_C_32
ENO
2.7 High Speed Counter [C]
Description
• The counting input changes from X000 to X006.
• The reset input is not provided.
• The start input is not provided.
• It operates as a hardware counter.
• The counting input changes from X002 to X007.
• The reset input is not provided.
• The start input is not provided.
• It operates as a hardware counter.
• The reset input is not provided.
• It operates as a hardware counter.
• The reset input is not provided.
• It operates as a software counter.
2 Devices in Detail