Emerson PACSystems RX3i User Manual page 163

PACSystems™ RX3i and RSTi-EP CPU Reference Manual
GFK-2222AK
6.2.13.1 Example Command Block for the Write Bytes Function
Address
Address +1
Address +2
Address +3
Address +4
Address +5
Address +6
Address +7
Address +8
Address +9
Address +10
Address +11
Although printable ASCII characters are used in this example, there is no restriction on the
values of the characters that can be transmitted.
6.2.13.2 Operating Notes
Specifying zero as the Transmit time-out sets the time-out value to the amount of time
actually needed to transmit the data, plus 4 seconds.
CAUTION
If an Initialize Port (4300) COMMEQ is sent or a Cancel Operation (4399) COMMREQ is
sent in either Cancel All or Cancel Write mode while this COMMREQ is transmitting a
string from a serial port, transmission is halted. The position within the string where the
transmission is halted is indeterminate. In addition, the final character received by the
device the CPU is sending to is also indeterminate.
Serial I/O, SNP & RTU Protocols
Value Value
(decimal) (hexadecimal)
0006 0006
0000 0000
0008 0008
0000 0000
0000 0000
0000 0000
4401 1131
0030 001E
0005 0005
25960 6568
27756 6C6C
0111 006F
Meaning
Data block length (includes
characters to send)
NOWAIT mode
Status word memory type (%R)
Status word address minus 1
(%R0001)
Not used
Not used
Write bytes command
Transmit time-out (30 seconds).
See note below.
Number of bytes to write
'h' (68h), 'e' (65h)
'l' (6Ch), 'l' (6Ch)
'o' (6Fh)
Section 6
October 2019
155