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INF-TN1FSH-E
- 143 -
8. APPENDIX
8.1. External communication specifications
8.1.1. Communication specifications
Item Specifications
Communication interface RS-232C
RS-485
Communication distance
15 m
1 km
Communication method
Half-duplex start-stop synchronization system
Communication procedure
Message system
Communication speed
9600, 19200, 38400bps
Communication mode
ASCII mode
Start bit
1 bit
Data
Hexadecimal ASCII representation (8 bits)
Parity None,
Odd,
Even
Data format
Stop bit
1, 2 bits
BCC Even
horizontal
parity
Station 01
to
31
Number of connected units
31 max./system (including other devices)
8.1.2. Message configuration
8.1.2.1. Receiving
Configuration Byte
count
Note
Start mark
1
STX (02h)
Station No. (SLV)
2
01 to 31
Mode/type
2
Measurement “U”/Polling system “P”
Function code (F_CD)
4
Refer to the function code table.
Error check
2
BCC
1 CR
(0Dh)
End mark
1 LF
(0Ah)
8.1.2.2. Response
Configuration Byte
count
Note
Start mark
1
STX (02h)
Station No. (SLV)
2
01 to 31
Mode/type
2
Measurement “U”/Polling system “P”
Function code (F_CD)
4
Refer to the function code table.
Data
#
Refer to the function code table.
Error check
2
BCC
1 CR
(0Dh)
End mark
1 LF
(0Ah)