Up/Down Counting Meter
K3NC
C-137
Counters
Output Unit
18 19 20 21 22 23 24 25 26
18 19 20 21 22 23 24 25 26
18 19 20 21 22 23 24 25 26
18 19 20 21 22 23 24 25 26
K31-C1: Relay (3 Outputs)
Outputs (5 A max. at 250 VAC)
H PASS L
K31-C2: Relay (5 Outputs)
Outputs (5 A max. at 250 VAC)
K31-C5: Relay (5 Outputs)
Outputs (5 A max. at 250 VAC)
HH PASS L
LLH
HH PASS L
H
LL
K31-T1: Transistor (NPN Open Collector)
Outputs (50 mA max. at 24 VDC)
HH H PASS L LL COM
+ −
18 19 20 21 22 23 24 25 26
18 19 20 21 22 23 24 25 26
10
0
10
1
10
2
10
3
10
4
48
10
4
12 4812 48 1248 1248 12
20
123456789
10 11 12 13 14 15 16 17 18 19
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37
K31-T2: Transistor (PNP Open Collector)
Outputs (50 mA max. at 24 VDC)
HH H PASS L LL COM
K31-B2, -B4: BCD (NPN Open Collector)
(Terminals 32 to 36 are provided only on K31-B4.
Outputs (50 mA max. at 24 VDC)
HH H PASS L LL COM
COMMON
DATA OVERFLOW
DATA VALID
RUN
COMMON
REQUEST
MAX. REQ.
MIN. REQ.
HOLD
RESET
POLARITY
HH
H
PASS
L
LL
COMMON
K31-L1, L2, L3,-L4, -L5, -L6, -L7, -L8, -L9,
L10: Linear
(Terminals 21 to 26 are provided only on K31-L4,
L5, -L6, -L9, -L10.)
L1, L4: 4 to 20 mA
L2, L5: 1 to 5 V
L3, L6: 1 mV/10 digit
L7, L9: 0 to 5 VDC
L8, L10: 0 to 10 VDC
Note: With K31-L4/-L5/-L6/-L9/-L10 models, terminals
1
and 2
are connected internall
.
SD
RD
SG
14
123456789
10 11 12 13
15 16 17 18 19 20 21 22 23 24 25
K31-FLK1: RS-232C
+ −
18 19 20 21 22 23 24 25 26
RDA
SDA
RDB
SDB
SG
6
2345
789
6
12345
789
1
K31-FLK2, -FLK5: RS-485
(Terminals 21 to 26 are provided only on K31-FLK5.)
HH H PASS L LL COM
RS-485
Terminator
ON
OFF
Outputs (50 mA max. at 24 VDC)
K31-FLK3, -FLK6: RS-422
(The right connector is provided only on K31-FLK6)
ON
OFF
K31-FLK4: RS-232C + Transistor (NPN Open Collector)
RS-232C
LL
HH
L
COM
H
PASS
Terminator
RS-422
• D-sub 37P Connectors for BCD output (attachment)
Plug: XM2A-3701
Hood: XM2S-3711
• D-sub 25P connectors for RS-232C output (K31-FLK1) (order
separately)
Plug: XM2A-2501
Hood: XM2S-2511
• D-sub 9P connectors for RS-422 output (K31-FLK3 and K31-
FLK6) (order separately)
Plug: XM2A-0901
Hood: XM2S-0911
• D-sub 9P connectors for RS-232C output (K31-FLK4) (order
separately)
Plug: XM2D-0901
Hood: XM2D-0911
Output NPN Tr.
(50 mA max. at 24 VDC)
Output NPN Tr.
(50 mA max. at 24 VDC)
L
H
PASS
HH
9
4321
87
6
5
LL
RD
SD
SG
COM
9
4321
87
6
5
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