Emerson PACSystems RX3i - Write Port Control Function (4304)

PACSystems™ RX3i and RSTi-EP CPU Reference Manual Section 6
GFK-2222AK October 2019
Serial I/O, SNP & RTU Protocols 150
6.2.9.3 Operating Notes
For reference, see the tables under Serial Port Pin Assignments in Section 5:.
Support for the DSR status bit is provided for COM1 only, and on all RX3i models (except
CPE302/CPE305), in versions 7.16 and later.
Support for the RP and DCD status bits is provided only for COM1 on the CPE310, in
version 7.16 and later .
6.2.10 Write Port Control Function (4304)
This function controls output signals on the specified port:
6.2.10.1 Example Command Block for the Write Port Control
Function
VALUE
(decimal)
VALUE
(hexadecimal)
MEANING
Address
0002
0002
Data block length
Address +1
0000
0000
NOWAIT mode
Address +2
0008
0008
Status word memory type (%R)
Address +3
0000
0000
Status word address minus 1 (%R0001)
Address +4
0000
0000
Not used
Address +5
0000
0000
Not used
Address +6
4304
10D0
Write port control command
Address +7
xxxx
xxxx
Port control word
6.2.10.2 Port Control Word
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
RTS
DTR
--
--
--
--
--
--
--
--
--
--
--
--
--
--