Thommen HM35 Bedienungsanleitung Seite 45

Sending a command from PC to the instrument
<SCPI Command> [SP <Parameter 1>] [ , <Parameter 2> ] [ , <Parameter 3> ] [ , ... ]
HT [ * <CS> ] CR
Examples:
Setting the time to 07:08:09:
S Y S T : T i m e SP 0 7 , 0 8 , 0 9 HT * 2 5 5 CR
S Y S T : T i m e SP 0 7 , 0 8 , 0 9 HT CR
Reading the time:
S Y S T : T i m e ? HT * 1 4 2 CR
S Y S T : T i m e ? HT CR
Response from instrument to PC
<Return Value 1> [ , <Return Value 2> ] [ , <Return Value 3> ] [ , ...] HT * <CS> CR
SCPI Command:
CS:
Return Value:
[ ]
ASCII-character
SP
HT
CR
*
,
SCPI Commands
There is no difference between small and capital letters.
Checksum (CS)
The use of the checksum is optional. A * indicates a following checksum. The ASCII-
character * is included in the calculation of the checksum. The checksum is calculated
from the low byte.
Example:
Reading the date
S Y
53 59
83 89
sum:
The checksum is 125 decimal.
Command:
S Y S T : D a t e ? HT * 1 2 5 CR
S Y S T : D a t e ? HT CR
SCPI command according the table on following pages
Checksum
Response from instrument
Option
Hex-Code
0x20
0x09
0x0D
0x2A
0x2C
S T : D
53 54 3A 44
83 84 58 68
37D low byte:
hex
893
dez
Meaning
Space
Horizontal Tabulation
Carriage Return
Asterisk
comma
a t e
61 74 65
97 116 101 63
7D
hex
125
dez
(with checksum)
(without checksum)
45
(with checksum)
(without checksum)
(with checksum)
(without checksum)
? HT *
3F 09 2A
hex
09 42
dez