LACO PROTOCOL DESCRIPTIONS TITANTEST™
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© 2018 LACO TECHNOLOGIES, INC. - TitanTest itra01en1-07 SB.fm - 1807
LED green: Leak detector is ready for measurement.
LED red: Setpoint is exceeded.
11.7 Serial Interface Protocols**
You can communicate with the TITANTEST™ via the following serial interface
protocols:
LD Protocol
ASCII Protocol
Diagnostic Protocol (Only for internal use.)
The serial interface protocol can be selected at the menu of the T
ITANTEST™.
Refer to T
ITANTEST™ operating instructions.
ASCII and LD protocol have nearly the same functional range, but each of
them have some advantages and disadvantages:
ASCII protocol Advantages:
human readable
easy to use with simple terminal program
Disadvantages:
No checksum, therefor lower data security
PC/ PLC software must convert numerical values from ASCII string to bina-
ry
Lower efficiency (for example: 8 data bytes for one float value)
LD protocol Advantages:
Leak detector status always transmitted in each slave telegram
High data security due to CRC checksum
Binary transmission of numerical values – no conversion needed in PC/
PLC software
High efficiency (for example: 4 Byte data bytes for one float value)
** Feature not available in TITANTEST™ Maintenance model
Table 53: Sniffer probe pin assignment
Pin Signal
1 not used
2 not used
3ZERO
4(LED red)
5(LED green)
6 +24 V (0.8 A slow fuse)
7 not used
8 not used
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