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Operating Instructions
Teledyne API - Model T200H/T200M Operation Manual
174
4.15.4.2. Hessen Com Port Configuration
Hessen protocol requires the communication parameters of the T200H/M’s com ports to
be set differently than the standard configuration as shown in the table below.
Table 4-34:
RS-232 Communication Parameters for Hessen Protocol
Parameter
Standard
Hessen
Data Bits
8
7
Stop Bits
1
2
Parity
None
Even
Duplex
Full
Half
Note
Ensure that the communication parameters of the host computer are properly set
Be aware that the instrument software has a 200 ms latency response to
commands issued by the host computer.
Operation via modem is not available over any com port on which HESSEN
protocol is active.
The first step in configuring the T200H/M to operate over a Hessen protocol network is
to activate the Hessen mode for com ports and configure the communication parameters
for the port(s) appropriately. Press:
SETUP X.X
PRIMARY SETUP MENU
CFG DAS
RNGE
PASS CLK
MORE
EXIT
SAMPLE A1:NXCNC1=100PPM NOX=XXX.X
< TST TST > CAL
SETUP
SETUP X.X
SECONDARY SETUP MENU
COMM
VARS DIAG ALRM
EXIT
SETUP X.X
COMMUNICATIONS MENU
ID
COM1
COM2
EXIT
SETUP X.X
COM1 MODE:0
SET>
EDIT
EXIT
Continue pressing next until …
Select which
COMM
port to configure
SETUP X.X
COM1 QUIET MODE: OFF
NEXT
OFF
ENTR EXIT
SETUP X.X
COM1 HESSEN PROTOCOL : ON
PREV
NEXT
ON
ENTR EXIT
SETUP X.X
COM1 HESSEN PROTOCOL : OFF
PREV NEXT
OFF
ENTR EXIT
ENTR
button accepts the
new settings
EXIT
key ignores the new
settings
The sum of the mode
IDs of the selected
modes is displayed
here
SETUP X.X
COM1 E,7,1 MODE: ON
PREV NEXT
ON
ENTR EXIT
SETUP X.X
COM1 E,7,1 MODE: OFF
PREV NEXT
OFF
ENTR EXIT
Toggle
OFF/ON
buttons to change
activate/deactivate
selected mode.
Repeat the
entire process to
set up the
COM2
port
07270D DCN7141