MULTIDOS
RS232 Interface
Brief Description
8
D177.131.2/0
6 Brief Description
Perform steps 1 to 5 in the given sequence to set up the MULTIDOS and read out measured data.
Step 1: physical setup
Connect the RS232 cable to the desired COM port of your personal computer. Switch the MULTIDOS on
and set it manually to the desired application. Set up the following items: unit, absolute or relative readings,
measuring mode, interval time, baudrate. Note that MULTIDOS will reawake in this configuration, when it is
switched on again.
Step 2: open communication
Start the communication program on your PC. The program must be set up correctly!
Telegram
Response
Description
PTW
MULTIDOS
Correct response signals proper communication setup and that MULTIDOS
is ready for communication. See note 1
A
a
Aa
Set/Read the MULTIDOS application. Parameter
a
: A = Afterloading, C =
Constancy Check, D = Dual Dosemeter, M = Multi Channel, L = Linear
Array. Sending A reads the current application, sending A with parameter
changes the application.
SER
SERxxxxxx
Correct response signals the MULTIDOS is ready to measure
Notes:
1. The answer must return within 3 seconds. The first seven characters of the response telegram must be
MULTIDOS (the response itself contains more characters). Repeat this telegram three times maximum, if
you do not receive the expected response or no response at all.
2. For all telegrams: if the expected response is not received, MULTIDOS is set up in a wrong way.
Step 3: zero adjustment
Telegram
Description
Response
NUL
The response is sent at the end of the procedure after approx. 35 seconds max.
If zeroing fails, E06 is responded instead of NUL. Obey the warm up time and
the guidelines for zeroing.
NUL
Step 4: set up and start measurement
Telegram
Description
Response
I
xxxx
Set the interval time between 6 und 9999 seconds (replace Parameter
xxxx
by
0006 to 9999). Only necessary to alter a previous setting.
I
xxxx
M
x
Set/Read MULTIDOS measuring mode.
Parameter
x
: 0 = Dose/Charge, 1 = Doserate/Current
Sending M reads the current mode, sending M with parameter changes the
mode.
M
x
STA
Same effect as the <STA> key
STA
INT
Same effect as the <INT> key
INT
Note: During a running measurement a new measurement may be immediately started by STA or INT.
Step 5: read measured values
Telegram
Description
Response
D
Reads the measured values
see application chapters in this manual
During serial communication, it is recommended to disable the MULTIDOS keyboard by the K0 telegram.
All MULTIDOS setup (used unit and measuring mode, reference used or not, etc.) can also be done by tele-
grams.
If MULTIDOS is running in menu mode, all telegrams with the exception of PTW will be responded by E03.
