O P E R AT I N G I N S T R U C T I O N S | Bulkscan®
8014829/ZV98/2018-05-07 | S I C K
Subject to change without notice
1 0 0
APPENDIX
Commands
The Bulkscan® replies to each telegram with the reply command to match the request
command.
Request commands Meaning
Reply commands
sRN
Output variable once
sRA
sEN ... 1
Output variable continuously
sEA … 1, sSN
sEN ... 0
Stop continuous variable output
sEA … 0
sWN
Write variable
sWA
sMN
Execute method (executed without errors)
sAN
sAN … 1
Execute method (error, not executed)
sAN … 0
(Other)
Command or data unknown
sFA
Tab. 26: Request command and the corresponding reply commands
Variable types
The variable types are given in the telegram syntax. Following variable types are possi-
ble:
Variable types
Length (Byte)
Value range
bool_1
1
0 oder 1
uint_8
1
0 … 255
int_8
1
–128 … +127
uint_16
2
0 … 65.535
int_16
2
–32.768 … +32.767
uint_32
4
0 … 4.294.967.295
int_32
4
–2.147.483.648 … +2.147.483.647
float_32
4
1,5 × 10
–45
… 3,5 × 10
38
string
Fixed
Example: String of length 6: "123ABC"
Important: Strings are not null-terminated
Tab. 27: Variable types
• The information in the "Length" column of the table refers to the binary transfer of
the numeric parameters.
• The information in the "Value range" column in the table refers to the value range
mathematically possible for the variable type. The actual value ranges for the pa-
rameters may be different.
• Examples:
The variable type "float_32" refers to the IEEE754 single-precision float
-
ing-point standard
.
Telegram example
Result
Output variable (volume flow rate):
Request: <STX>sRN
mvVolumeFlow
<ETX>
Reply: <STX>sRA
mvVolumeFlow
43AF6E14<ETX>
The volume flow rate is
350.86 m³/h (43AF6E14h).
Note
