Mitsubishi Electric MELSEC Q Series Structured Programming Manual page 68

(c) Devices that can be used for the index setting (for FXCPU)
4.6 Index Setting
4-44
2) Devices with restrictions on index registers
Device
Only Z0 or Z1 can be used for contacts or
T
coils of the timer.
Only Z0 or Z1 can be used for contacts or
C
coils of the counter.
The following table shows the devices that can be used for the index setting.
Device
M, S, T, C, D, R,
Decimal devices, values
KnM, KnS, P, K
X, Y, KnX, KnY Octal devices
H Hexadecimal values
1) Devices with restrictions on index registers
When using FXCPU, note the following precautions.
• The index setting for devices used in the basic instructions is available for
FX and FX
3U
• The index setting cannot be applied to 32-bit counter and special auxiliary
relay.
Remark
There are no usage restrictions on index register numbers for current values of
the timer and counter.
X0
TC0
100
SM400
TN0Z4
X1
CC100
SM400
CN100Z6
Description
Description
only.
3UC
OUT_T
EN ENO
s1
s2
BCD
EN ENO
s d K4Y30
OUT_C
EN ENO
s1
10 s2
BCD
EN ENO
s d K2Y40
Example
TS0Z0
OUT_T
EN
TC1Z1 s1
100 s2
CS0Z1
OUT_C
EN
CC1Z0 s1
100 s2
Set value of timer
(Index setting is not applicable)
Current value of timer
Set value of counter
(Index setting is not applicable)
Current value of counter
ENO
ENO