Allocation Of Device Numbers To Input Numbers; Allocation Table; Restriction Of Redundant Use Of Input Numbers - Mitsubishi Electric MELSEQ FX3S Series User Manual

FX Series Programmable Controllers
3S
User's Manual - Hardware Edition
10.4

Allocation of Device Numbers to Input Numbers

The high-speed counter numbers are allocated to the input terminals X000 to X007 as shown in the following
table. The input terminals not allocated for high-speed counters can be used as general input terminals.

10.4.1 Allocation table

U: Up-count input
R: External reset input
High-speed counter type
1-phase 1-count input
1-phase 2-count input
2-phase 2-count input
*1. When a special auxiliary relay is driven in a program, the input terminals and their associated
functions are switched.

10.4.2 Restriction of redundant use of input numbers

The input terminals X000 to X007 can be used for high-speed counters, input interruption, pulse catch, SPD
instruction, ZRN instruction and DSZR instruction and general-purpose inputs.
Take care not to overlap the input numbers.
88
D: Down-count input
S: External start input
High-speed counter No.
X000
C235 U/D
C236
C237
C238
C239
C240
C241 U/D
C242
C243
C244 U/D
C245
C246 U
C247 U
C248
*1
C248 (OP)
C249 U
C250
C251 A
C252 A
C253
*1
C253 (OP)
C254 A
C255
→ For the function switching method, refer to Subsection 10.9.2.
10 Use of High-speed Counters
10.4 Allocation of Device Numbers to Input Numbers
A: A-phase input
Input allocation
X001 X002 X003 X004
U/D
U/D
U/D
U/D
R
U/D R
U/D
R
U/D R
D
D R
U
U
D R
U
B
B R
A
A
B R
A
B: B-phase input
X005 X006 X007
U/D
R
S
S
D R
D
S
D R S
B R
B
S
B R S