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Burkert Type 8643 User Manual

Page 45

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45

Configuring the network

Description of the block parameters of the function block

9.2.3.5.

parameter

Description

rEaDBaCk_D

This parameter returns the position of the valve and the sensors.

Bit 7 6 5 4 3 2 1 0

0 0

Do not initialize

0 1

Closed

1 0

Open

1 1

On the move

Status sensor 1
Short-circuit sensor
No-load sensor 1
Status sensor 2
Short-circuit sensor
No-load sensor 2

1 = active
0 = inactive

sp_D

Set-point value

Bit 0 in the value specifies the valve position. The transferred status must be a
“good” status, e.g. 0x80.

out_D

Process value of the valve position. Bit 0 in the value indicates the valve position.

rCas_in_D

Set-point value in the RCAS status (Remote Cascade). Bit 0 in the value specifies
the valve position. The transferred status must be a “good” status, e.g. 0x80.

rCas_out_D

Process value of the valve position in the RCAS status. Bit 0 in the value indicates
the valve position.

ChannEl

Indicates the transducer block. There are channels 1-4. The function blocks are per-
manently assigned.

inVErt

Inverts the set-point value in the AUTO or RCAS status0 = do not invert1 = invert

fsaVE_timE

Time in seconds after which the “Failsave” action starts following a break in the
cyclic communication. The maximum value for this time is approx. 18 hours.

fsaVE_typ

Response to “Fail save”

0 = Valve retains the last status
1 = Valve switches according to FSAVE_VAL_D
2 = Isolate valve

fsaVE-Val-D

Valve position in “Fail save”, if selected.

simulatE

Allows the simulation of READBACK_D

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Type 8643 PA