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User Manual
GFK-1503F
Address + 9
Address + 10
Address + 11
Address + 12
Address + 13
Address + 14
Address + 15
Address + 16
Address + 17
Address + 18
Address + 19
Address + 20
Address + 21
*
12.2.6
Example COMMREQ Data Block for Configuring RTU
Protocol
First 6 words
Address + 6
Address + 7
Address + 8
Address + 9
Serial I/O / SNP / RTU Protocols
Values
7=38400, 6=19200, 5=9600,
4=4800
0 = None, 1 = Odd, 2 = Even
1 = None
0 = None, 1 = 10ms, 2 = 100ms,
3 = 500ms
0 = Long, 1 = Medium, 2 = Short,
3 = None
1 = 8 bits
0 = 1 Stop Bit, 1 = 2 Stop bits
not used
not used
user-provided*
user-provided*
user-provided*
user-provided*
The device identifier for SNP Slave ports is packed into words with the least
significant character in the least significant byte of the word. For example, if
the first two characters are "A" and "B," the Address + 18 will contain the hex
value 4241.
Values
FFF0H
003
000
2=1200, 3-2400, 4=4800,
5=9600, 6=19200,7=38400*,
8=57600**
*CPU models IC200CPU005 and
CPUE05 only
Meaning
Data Rate
Parity
Flow Control
Turnaround Delay
Timeout
Bits Per Character
Stop Bits
Interface
Duplex Mode
Device identifier bytes 1 and 2
Device identifier bytes 3 and 4
Device identifier bytes 5 and 6
Device identifier bytes 7 and 8
Meaning
Reserved for COMMREQ use.
Command
Protocol: 0003=RTU
Port Mode: 0000=Slave
Data Rate
Chapter 12
Jan 2020
207
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