42
LDB-ST1LE Batcher
9. RS-232 Serial Port
9.1 RS-232 Port Description:
The LDB-ST1LE has a general purpose RS-232 Port which may be used for any one of the following purposes:
Transaction Printing
Data Logging
Remote Metering by Modem (optional)
Computer Communication Link
Configuration by Computer
Print System Setup
Print Calibration/Malfunction History
9.2 Instrument Setup by PC’s over Serial Port
A Diskette program is provided with the LDB-ST1LE that enables the user to rapidly configure the LDB-ST1LE using
a Personal Computer. Included on the diskette are common instrument applications which may be used as a starting
point for your application. This permits the user to have an excellent starting point and helps speed the user through the
instrument setup.
9.3 Operation of Serial Communication Port with Printers
LDB-ST1LE ’s RS-232 channel supports a number of operating modes. One of these modes is intended to support
operation with a printer in metering applications requiring transaction printing, data logging and/or printing of calibration
and maintenance reports.
For transaction printing, the user defines the items to be included in the printed document. The user can also select what
initiates the transaction print generated as part of the setup of the instrument. The transaction document may be initiated
via a front panel key depression, a remote contact closure, or upon completion of a batch.
In data logging, the user defines the items to be included in each data log as a print list. The user can also select when
or how often he wishes a data log to be made. This is done during the setup of the instrument as either a time of day or
as a time interval between logging.
The system setup and maintenance report list all the instrument setup parameters and usage for the current instrument
configuration. In addition, the Audit trail information is presented as well as a status report listing any observed
malfunctions which have not been corrected.
The user initiates the printing of this report at a designated point in the menu by pressing the print key on the front
panel.
9.4 LDB-ST1LE RS-232 Port Pinout
RX COM
TX
TX/RC +
GND 180REF
TX/RC –
2 3
4 5 6
1
COMMUNICATION
RS-232
RS-485
TB-2
13
PULSE OUTPUT
+
PULSE OUTPUT
-
ANALOG OUTPUT
-
ANALOG OUTPUT
+
RL
Y1
RL
Y2
AC LINE AC LINE
24
18
COM
19 20 21 22
23
NO NC COM NO
14 15 16
17
NC
POWER IN*
DC
-
4-20 mA
COM RL
Y3
COM RL
Y4
26 27 28 29 30
NO NC
NO
DC
+
25
NC
PULSE IN
1
PULSE IN
2
DC OUTPUT
COMMON
RTD EXCIT
+
RTD SENS RTD SENS -
CNTR IN
1
CNTR IN
2
CNTR IN
3
COMMON
---------
8 9 10 11 12
2 3 4 5 6 7
1
SEE USER MANUAL
COMP
Iin
+
+
Vin + Iin
+
Vin +
IN
IN
FLOW
RX COM
TX
TX/RC +
GND 180REF
TX/RC –
2 3 4 5 6
1
COMMUNICATION
RS-232 RS-485
TB-1
TB-2
* Power Terminals 23 & 24 used for DC Input only when ordered with DC INPUT option
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
23 24
17 18 19 20 21 22
1 2 3 4 5 6
TB-1
TB-2
