INFICON HLD6000 Refrigerant Leak Detector Interface Description - Manual (Page 4)

4 Interface Protocols
1 Interface Protocols
1.1 Serial Interface Protocols
With the IO1000 module you can communicate with the HLD6000 via the following
serial interface protocols:
• ASCII Protocol (enabled by default)
• LD Protocol
If you want to replace a HLD5000 with a HLD6000 you can also use
• Protocol "Simple"
• Protocol "Normal"
The interfaces protocols "Simple" and "Normal" are not described in this document.
Please refer to the "HLD5000 Interface Description". Furthermore, please note no
more supported serial interface commands in these protocols, see chapter 1.2.
"Simple" and "Normal" protocols use 9600 baud, 8 data bits, no parity, 1 stop bit.
Slower baud rates (which are supporded by HLD5000) are not supported by
HLD6000.
The serial interface protocol can be selected via DIP switch at the IO module IO1000
or via operating unit HLD6000. Please refer to appropriate documentation.
1.2 Not supported Commands in "Normal" and "Simple"
Protocols
The following serial interface commands in "Normal" and "Simple" protocols are not
supported by using HLD6000 any more:
1.2.1 Simple Protocol
# : PIN number for the program menu
Reason: Totally different menu access control at the HLD6000
K : Display contrast setting
Reason: No Contrast setting for HLD6000 display
o : operating hours counter of the calibrated leak
Reason: COOL-Check has no operating counter
This command was only valid for the very first HLD5000 versions.
Changed behavior:
M : Most recent entry into error log and total number of entries
Do not use "Simple" or "Normal" protocol for new developments. They have
limited functional range and may not be supported in future.