List Of Device Numbers And Functions - Mitsubishi FX3U SERIES User Manual

FX Series Programmable Controllers
3U
User's Manual - Hardware Edition
11.4

List of Device Numbers and Functions

Counter Device No.
type (counter)
C235
C236
C237
C238
C239
1-phase C240
1-count
C244(OP)
input
C245(OP)
C241
C242
C243
C244
C245
C246
C248(OP)
1-phase
C247
2-count
C248
input
C249
C250
C251
C253
2-phase
2-count C252
input
C253(OP)
C254
C255
*1. These counters are handled as software counters depending on working conditions. When they are
handled as software counters, they have limitations on maximum response frequency and overall
frequency.
→ For the conditions under which they are handled as software counter, refer to Section 11.8.
*2. When the input terminals of the main unit receive pulses having a response frequency of 50k to
100kHz, wire the terminals as stated below.
- The wiring length should be 5m (16'4") or less.
- Connect a bleeder resistance of 1.5kΩ (1W or more) to the input terminal, so that the load current
of the open collector transistor output on the mating device side is 20mA or more.
*3. C244, C245 and C248 are useally used as software counters. When they are used in combination
with special auxiliary relays (M8388 and M8390 to M8392), they can be used as hardware counters
C244(OP), C245(OP) and C248(OP).
*4. The 2-phase 2-input counters are 1 edge count counters. When they are used in combination with
special auxiliary relays (M8388, M8198 and M8199), they can be used as 4 edge count counters.
→ For the procedures on using them as 4 edge count counters, refer to Subsection 11.11.4.
186
→ For details on the counter number (OP), refer to Subsection 11.3.3.
Classification
*2
*2
*2
*2
Hardware
*1
*2
counter
*2
*3
*3
Software
counter
*3
*3
*2
Hardware
*1
*2*3
counter
*3
Software
counter
*2
Hardware
*1
counter
*2
Software
*6
counter
→ For the procedures on switching the counter function, refer to Subsection 11.11.3.
11 Use of High-speed Counters (C235 to C255)
1 edge count/
Data length
4 edge count
−
32-bit
bi-directional
−
counter
−
−
−
32-bit
bi-directional
−
counter
−
*4
1 edge count
*4
4 edge count
*4
1 edge count
*4
4 edge count
32-bit
*4
1 edge count
bi-directional
*4
4 edge count
counter
*4
1 edge count
*4
4 edge count
*4
1 edge count
*4
4 edge count
→ For the overall frequency, refer to Section 11.9.
→ For the wiring, refer to Section 11.10.
11.4 List of Device Numbers and Functions
External reset External start
input terminal input terminal
None None
*5
None
Provided
*5
Provided
Provided
None None
*5
None
Provided
*5
Provided
Provided
None
None
*5
Provided
*5
Provided
None
None
*5
Provided
Provided