Emerson PACSystems RSTi-EP User Manual page 238

User Manual
GFK-2958J
Input Byte 0 (Status) of
Module
Action
7 6 5
TX_CNT_
Stat RX_CNT
ACK
Init/
1 0 0
Startup
Activat
e
commu 1 0 0
nicatio
n
1 0 0
Receive
data
1 0 0
1 0 0
Send
data
1 0 1
Detailed Description of I/O Modules
Input
Byte1
(length
4 3 2 1 0
of RX
byte
seg.)
0 0 0 0 0 0
0 0 0 0 0 0
N
0 1 0 0 0
(1 ..14)
0 1 0 0 0 N
0 1 0 0 0 X
0 1 0 0 0 X
Output byte 0 (control) off the
module
7 6 5 4 3
STATR TX_CN
RX_CNT_ACK
ES T
0 0 0 0 0
1 0 0 0 0
1 0 0 0 0
1 0 1 0 0
1 0 1 0 1
1 0 1 0 1
Chapter 5
Oct 2019
Output
Notes
byte 1
(length
2 1 0
of TX
byte
seg.)
After
power-up,
module is
0 0 0 0
ready for
communica
tion
PLC is ready
for
0 0 0 0 communica
tion
(response)
Module has
0 0 0 0 received
bytes
RX
acknowledg
0 0 0 0
e after data
taken over
Before
N changing
0 0 0
(1...14) TX-CNT, set
TX bytes
TX
acknowledg
0 0 0 N e after
module sent
data
223