Liquid Controls SP4000 - Manual (Page 107)

SP4000 Flow Computer
104
8. RS-232 Serial Port
8.1 RS-232 Port Description:
The SP4000 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 or Two Way Paging
(optional), Computer Communication Link, Configuration by Computer, Print System
Setup, Print Calibration/Malfunction History
8.2 Instrument Setup by PC’s over Serial Port
A Diskette program is provided with the SP4000 that enables the user to rapidly configure the
SP4000 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.
8.3 Operation of Serial Communication Port with Printers
SP4000’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.
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.
8.4 SP4000 RS-232 Port Pinout
1 Handshake Line (cd in)
2 Transmit (tx)
3 Receive (rx)
4 Do Not Use
5 Ground
6 Do Not Use
7 RTS out
8 Do Not Use
9 DC Power Out*
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
1 2 3 4 5
6 7 8 9
1 2 3 4 5
6 7 8 9
RS-232 RS-485
* 8 VDC Power supplied on Pin 9 to power
modem or two way pager
1 2 3 4 5
6 7 8 9