Endress+Hauser Proline Promag L 400 - Page 74

System integration Proline Promag L 400 PROFIBUS DP
74 Endress+Hauser
Factory setting
Function block Factory setting
DI 1 Empty pipe detection
DI 2 Low flow cut off
Data structure
Input data of Discrete Input
Byte 1 Byte 2
Discrete Status
DO module (Discrete Output)
Transmit discrete output values from the PROFIBUS master (Class 1) to the measuring
device. Discrete output values are used by the PROFIBUS master (Class 1) to enable and
disable device functions.
The DO module cyclically transmits the discrete output value, along with the status, to the
measuring device. The discrete output value is depicted in the first byte. The second byte
contains standardized status information pertaining to the output value.
Two Discrete Output blocks are available (slot 11 to 12).
Assigned device functions
A device function is permanently assigned to the individual Discrete Output blocks.
CHANNEL Function block Device function Values: control (meaning)
891 DO 1 Flow override
• 0 (disable device function)
• 1 (enable device function)
1429 DO 2 Start verification
1)
1) Only available with the "Heartbeat Verification" application package
Data structure
Output data of Discrete Output
Byte 1 Byte 2
Discrete Status
EMPTY_MODULE module
This module is used to assign empty spaces arising from modules not being used in the
slots (→  70).