Status; Status Byte - Siemens Pointek CLS200 Digital Operating Instructions Manual

Transmission of user data via PROFIBUS PA
The user data is continuously updated by the cyclic service of PROFIBUS PA. The user
data is the OUT parameter of the Discrete Input Function Block and is composed of the
Logical Level and Status bytes.
The 2 bytes must be read consistently
by byte, and must not suffer an interrupt. If you are using an S7-300 / 400, you will need to
use SFC14 DPRD_DAT: Read Consistent Data of a Standard PD Slave.
Byte
Byte 1
Byte 2
a.
If Condensed status is turned on (default), then the condensed status
appears here.
Logical Level
The Logical Level indicates the level of the material.
Inversion
OFF
OFF

Status

Status provides information via the status byte, on the usability of the measured value in
2
the PLC/DCS , the device status, and additional process information (for example,
process alarms).

Status Byte

The status byte is a standardized code returned by a PROFIBUS slave on every bus scan,
along with the main process variable (output of the Analog Input Function Block).
• The status code indicates whether the process variable is valid or not.
• It also indicates other process-related information.
Status Codes
The codes for the Status bytes are listed in the following tables. Possible causes for an
error are shown, along with measures to correct it.
If the language selected for the display is numeric, a status code will be displayed. If any
other language has been selected, a status description will be displayed
For more detail, please consult the PROFIBUS PA User and Installation
Note:
Guideline (order number 2.092), available for download from www.profibus.com.
1.
Consistent in this context means all-at-one-time.
2.
Programmable Logic Controller/Distributed Control System
7ML19985JJ03
1
, in a contiguous chunk: they must not be read byte
Sensor Status
uncovered
covered
Pointek CLS200/300 Digital – OPERATING INSTRUCTIONS
Out
Logical Level
a
Status
Logical Level
= 0 (zero)
= 1
.
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