Crison 44 - Section 5 Advanced Operations; RS 232 Communication

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Section 5 Advanced operations
5.1 RS 232 communication
MultiMeter 44 in all its versions has one RS 232 interface that can be used for:
• Communication with a PC, “Send to PC”: for “on-line” data sending with frequency
programmed in the Data Logger or Data Logger information extraction.
• Messages sending through GSM to a mobile phone.
• Data Logger information extraction for later data analysis. For this purpose “memory
module” is required. It connects directly to the external MP-5 connector.
• External Hold. RS232 configuration for regulation blocking. Crossing the signal Rx
and Tx, the regulation through relays or 4-20 mA is inhibited.
5.1.1 Connection
The connection for data sending can be done in external connector MP-5 or to rear panel
Figure 30 RS 232 connection with converting module code 44 99
Code 44 99: Converting module RS 232 / USB for communication with PC. It includes
connection cable and software (see MM-485 software at 5.2.3 Software MM-485,
page 66).
Specification:
Baud rate: 9600. Word length: 8 bits. Stop bits: 1 bit. Parity: none
DANGER
The RS 232 and the MP5 connection must be performed with the instrument always disconnect
to power.
NOTICE
The instrument only allows sending one data connection, or the connection to the connector strip
(rear panel) or the external MP-5
1 White: To terminal RxD 3 Black: To terminal GND 5 Converting module code 44 99
2 Brown: To terminal TxD 4 Cable with DB9 female connector
(included in code 44 99)
RS 232 Relays
NL
Mains
Fuse
110/230V: T100L 250V
24V: T500L 250V
8910
GND TxD RxD
Alarm Cleaning
123 4567
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