30
S G M 1 4 0 0 S e r i e s S m a r t M e t e r U s e r M a n u a l – S M E T S 2
Communication Interfaces
20 Pin Connector
Optional AC Mains Connector
Pin
Name
Symbol
Input/
Output
Pull-up Function
1
+12 V
+12 V
–
–
12 V DC power supply rail
2
+12 V
+12 V
–
–
12 V DC power supply rail
3
Common
COM
–
–
Common DC power supply rail
4
Common
COM
–
–
Common DC power supply rail
5
Device
Present
CH_PR
Input
Y
Active low (communications hub
present)
6
Host Present MT_PR
Output
Y
Active low (host present)
7
Transmit
Data (Tx)
TX_MT
Output
Y
Serial NRZ line code, logic 0 =
high
8
Receive Data
(Rx)
RX_MT
Input
Y
Serial NRZ line code, logic 0 =
high
9
AC Lost
AC LO
Output
Y
Active high (No AC present)
10
Reserved
CSP_A
NC
N
For use by CSP
11
Reserved
CSP_B
NC
N
For use by CSP
12
Reserved
CSP_C
NC
N
For use by CSP
13
Reserved
RMM_B
NC
N
For future use by ESME manufacturer
14
Reserved
RMM_C
NC
N
For future use by ESME manufacturer
15
Reserved
RMM_D
NC
N
For future use by ESME manufacturer
16
Reserved
RMM_E
NC
N
For future use by ESME manufacturer
17
Reserved
RMM_F
NC
N
For future use by ESME manufacturer
18
Reserved
CSP_D
NC
N
For use by CSP
19
Reserved
CSP_E
NC
N
For use by CSP
20
Reserved
CSP_F
NC
N
For use by CSP
Summary of Contents for SGM1400 Series
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Page 4: ...ii S G M 1 4 0 0 S e r i e s S m a r t M e t e r U s e r M a n u a l S M E T S 2...
Page 12: ...2 S G M 1 4 0 0 S e r i e s S m a r t M e t e r U s e r M a n u a l S M E T S 2 Aclara Support...
Page 54: ...44 S G M 1 4 0 0 S e r i e s S m a r t M e t e r U s e r M a n u a l S M E T S 2 Billing Data...
Page 94: ...84 S G M 1 4 0 0 S e r i e s S m a r t M e t e r U s e r M a n u a l S M E T S 2 Disposal...
