FX2N-32DP-IF Profibus-DP Interface Unit
Appendix C:
C-15
C-2-5:
FX
2N
-4DA Extension Configuration (Intel Format)
Requirements:
•
Cyclic data is 4 word outputs in every cycle.
•
Parameter is 50 bytes.
•
For the FX
2N
-4DA the GSD-File is using a setting which is different to the default of the
FX
2N
-4DA. The BFM #5 is set to 1111hex which will reset the analog outputs to the offset
value if there is no further FROM/TO instruction.
The reason for this setting is the behavior of the FX
2N
-32DP-IF, according to the Profibus
specification it will set the cyclic output data to '0' if the Slave detects an internal
watchdog error (Profibus down). In the case of the FX
2N
-4DA ext. & short configuration,
an internal watchdog error will set the analog output data of channel 1,2,3 and 4 to 0
which means offset value.
•
To hold the last output value, please use 'simple communication', because this
communication style is accessing the BFMs indirectly. In the case of a watchdog error of
the FX
2N
-32DP-IF, access to the FX
2N
-4DA will be stopped but the last output data will be
held if BFM #5 is set to 0 for the corresponding channel.
Table C-12: Cyclic Data of FX
2N
-4DA Extension Configuration
(Intel Format)
Send Data
Receive Data
1st
Data for channel 1
None
2nd
Data for channel 2
3rd
Data for channel 3
4th
Data for channel 4
Table C-13: FX
2N
-4DA Extension Configuration (Intel Format)
Nr.
Parameter Name
Value Setting List
Description
00
(1st)
Next parameter
uses EEPROM.
DON'T write parameter to
EEPROM
The 2nd parameter use EEPROM.
Select “writing to EEPROM” setting
from the available options.
write parameter to EEPROM
01
(2nd)
..O/G setting
prohibit/permit
permit offset/gain setting
Select prohibit/permit setting of offset/
gain from the available options (BFM
#21).
prohibit offset/gain setting
02
(3rd)
RESET/INIT.
MODULE TO
DEFAULT
no reset/initialisation
Select initialize module setting from
the available options (BFM #20).
RESET/INITIALISE MODULE
03
*1
(4th)
VERIFY RESET/
INITIALISE
COMMAND
no reset/initialisation
Select initialize module setting from
the available options (BFM #20).
RESET/INITIALISE MODULE
04
(5th)
Next parameter
uses EEPROM.
DON'T write parameter to
EEPROM
The 6th to 9th parameter use
EEPROM. Select “writing to
EEPROM” setting from the available
options.
write parameter to EEPROM
Содержание FX2N-32DP-IF
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