INFICON LDS3000 Modular Leak Detector Interface description - Manual (Page 29)

LD Protocol 29
Cmd H/L: Command: Command-specifier
Command name in plain text
• 7-Bit ASCII, only printable characters (0x20 and 0x7E)
• Always in English
• Units in square brackets
Command info
Bit 15 ... 13 Meaning High Nibble (Hex) Comments
000 Read value 0
001 Write value 2
010 Read lower limit value 4
Min values also
defined for read
commands.
011 Read upper limit value 6
Max values also
defined for read
commands.
100 Read default value 8
Def values also
defined for read
commands.
101
Read command name in
plain text
A
Please refer to
chapter “Command
name in plain text”
below.
110 Read command info C
Please refer to table
“Command info”
below
111 not used E
1. Byte Data type (see table “Data types”)
2. Byte
Number of array elements:
0 = no data, no array
1 = data, no array
2 ... 255 = array
3. Byte
Bit 0: 1 = Reading allowed, 0 = Reading not allowed
Bit 1: 1 = Writing allowed, 0 = Writing not allowed
Bit 2 ... 7: always 0 (not used)