63
The time-out for the above answers is:
1) answer to “STS”, “PHR”, “MVR”, “TMR”, “AER” com-
mands: 30 ms @ 19200 or 9600 bit/s, 40 ms @ 4800
bit/s, 60 ms @ 1200 bit/s (for the complete answer, from
STX to ETX) .
2) answer to other commands: 2s (for the first character of
the answer) .
The minimum delay between the last received and the first
sent character is 15 ms to allow the master to set itself into
receiving mode .
Here are descriptions of the answers format (for setup item
request see above):
The
NN
SNR
request produces the following answer:
“
NN
<STX><7-character long ASCII string rep-
resenting hardware identifier><ETX>” (e .g .
“29<STX>1234567<ETX>” if the Process ID alias
RS485 address is 29 and the hardware identifier is
1234567) .
The
NN
GET
command is answered with “
NN
<CAN>”
when used for the hardware identifier .
The
NN
MDR
request produces the following answer:
“
NN
<STX>FP504XYZ
VV
--ABCD<ETX>”
where
VV
is the firmware version, e .g . ”10” for 1 .0;
XYZ are the three model digits, e .g . XYZ=214 for dual
setpoint, ON/OFF and PID control, dual analog output;
AB is the first
HI92500
software version compatible with
the firmware, even if it may not be able to exploit all the
features of the firmware, e .g . “34” for 3 .4;
CD is the first
HI92500
software version fully compatible
with this firmware, e .g . “45” for 4 .5 .
