Operation
Ex p Control unit
SILAS
pz
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A1-37S2-7D0001_pz_Manual_Exp-Control-Unit_20210923_0_en.docx
Rev. 0
Reading container data
Data is retrieved for the control room via a web browser or using an appropriate
software tool to be provided by the customer that is able to send an HTML GET
message equivalent to a browser request across the network to the SILAS
device.
The data format returned from the device is JSON
(see https://de.wikipedia.org/wiki/JavaScript_Object_Notation)
Request:
Data for the control room can be
retrieved using the URL:
http://<ip-addr>/info_operator.json
e.g. http://192.169.1.101/info_operator.json
The username and password must be
entered.
Login: “operator”
Password: “operator”
Reply from the control unit:
Code table:
Key/ID
Parameter
Unit
_0x0401
Operating pressure po (setpoint)
Pa
_0x0101
Operating pressure po (actual)
Pa
_0x0402
Minimum pressure (shutdown pressure level)
Pa
_0x0403
Pre-alarm (switching value)
Pa
_0x1001
Purge pressure p3 (setpoint)
Pa
_0x0201
Purge pressure p3 (actual)
Pa
_0x0501
Maximum pressure, operation p4 (switching value)
Pa
_0x0502
Maximum pressure, purge p5 (switching value)
Pa
_0x1312
Pressure sensor A pa (actual)
Pa
_0x132A
Pressure sensor B pb (actual)
Pa
_0x0602
Purge time
Seconds