7
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This Central Unit features a standard RS-232 output whose
purpose is to send to an receiving device (like a PC or a PLC) a
periodic complete report of the unit settings as well as the
measured values.
The RS232 output transmits with the following settings:
x
Speed: 9600
baud
x
Data:
8 bits
x
Parity: None
x
Stop:
1 bit
These settings are fixed and cannot be modified by the user.
An example of the messages sent by the Central Unit over the
RS232 port is in the following:
:B):B&5!/)!
3B)$8/7B/B5B6BSSSSB&5!/)!
$B&<BSBSB/BSB/B&5!/)!
%B0<BBB/BB/B&5!/)!
&B/<BBB/BB/B&5!/)!
'B&1BSBSB/BSB/B&5!/)!
9B\\PPGGBKKPPB0B/B&SB&SB&5!/)!
9B\\PPGGBKKPPB0B/B&SB&SB&5!/)!
9B\\PPGGBKKPPB0B/B&SB&SB&5!/)!
The explanation for each of the lines transmitted is in the
following.
6(783&21),*85$7,21675,1*VHQWHYHU\VHFRQGV
Firmware Version String
:B):B&5!/)!
where:
:
Character for command identification.
):
Characters for firmware version identification.
Firmware version (example: 014626).
&5!
CR character (Carriage Return = 0Dhex or 13dec).
/)!
LF character (Line Feed = 0Ahex or 10dec).
Alarm State and Control Mode of Aux Relay + Password
3B)$8/7B/B5B6BSSSSB&5!/)!
where:
3
Character for command identification.
)$8/7
Characters for identify the alarm state of the
auxiliary relay (DISAB, FAULT, PR+AL, AL+FA,
ALARM).
/
Control mode of auxiliary relay:
L
=
Locked,
O
=
Unlocked.
5
:
Auxiliary relay activation mode:
N = Normal (unpowered when Off),
R = Reverse (powered when Off).
6
:
Auxiliary relay “power up” status:
E = Enable (manual start operation, press reset
button).
D = Disable (automatic start operation).
SSSS
Password of the central unit.
&5!
CR character (Carriage Return = 0Dhex or 13dec).
/)!
LF character (Line Feed = 0Ahex or 10dec).
Zone 1 Setup Data
$B&<BSBSB/BSB/B&5!/)!
where:
$
Fixed, identifies Zone 1.
&
Gas type set in the zone (C = CO, M = Methane,
L = LPG).
<
Zone state ( Y = Active, N = Inactive ).
S
Full scale value + meas. Unit
(p=ppm,
%=%L.E.L.).
/
Prealarm relay mode (L = locked, O = open)
S
Prealarm value + meas. Unit
(p=ppm,
%=%L.E.L.).
S
Alarm value + meas. unit (p=ppm, %=%L.E.L.).
/
Alarm relay mode ( L= locked, O = open).
&5!
CR character (Carriage Return = 0Dhex or 13dec).
/)!
LF character (Line Feed = 0Ahex or 10dec).
Zone 2 Setup Data
%B0<BBB/BB/B&5!/)!
where:
%
Fixed, identifies Zone 2.
The remaining information meaning is the same as per Zone 1.
Zone 3 Setup Data
&B/<BBB/BB/B&5!/)!
where:
&
Fixed, identifies Zone 3.
The remaining information meaning is the same as per Zone 1.
Zone 4 Setup Data
'B&1BSBSB/BSB/B&5!/)!
where:
'
Fixed, identifies Zone 4.
The remaining information meaning is the same as per Zone 1.
0($685('9$/8(6675,1*VHQWHYHU\VHFRQGV
9B\\PPGGBKKPPB
0B/B&SB&SB&5!/)!
where:
9
Fixed, identifies Values string
\\PPGG
year + month + day set in the unit clock.
KKPP
hour and minute set in the unit clock.
0
Zone1: type (M,L,C) + measured value +
meas. unit (%,ppm).
/
Zone2: type (M,L,C) + measured value +
meas. unit (%,ppm).
&S
Zone3: type (M,L,C) + measured value +
meas. unit (%,ppm).
&S
Zone4: type (M,L,C) + measured value +
meas. unit (%,ppm).
&5!
CR character (Carriage Return = 0Dhex or
13dec).
/)!
LF character (Line Feed = 0Ahex or 10dec).
R
G
Y
S
00 M
B
P
4
S
E
019179G0 200
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