3 Data Exchange with the CPU Unit
3-18
CJ-series PROFIBUS Slave Unit Operation Manual for NJ-series CPU Unit (W510)
*_FailSafeEnblSta BOOL R Fail-safe
enabled
FALSE: After the master sends a global control
command CLEAR, the slave requires data tele-
grams containing 0000 as data, in order to
remain in data exchange mode.
TRUE: After the master sends a global control
command CLEAR, the slave can accept data
telegrams containing no data, while still remain-
ing in data exchange mode
*_ParamErr BOOL R Parame-
ter/configura-
tion error
FALSE: The slave unit has received and
accepted Set_Prm and Chk_Cfg telegrams
from its master.
TRUE: The slave has not received, or received
incorrect parameter and/or configuration tele-
grams from a master unit. I/O data exchange
over PROFIBUS-DP will not take place.
Parameter Error can be caused by:
• Invalid standard parameter settings (valid set-
tings are described in the PROFIBUS stan-
dard).
• Invalid user parameter settings (allowed set-
tings are described in the GSD file of the
Unit).
• Incorrect start addresses for I/O data in the
host CPU system. If one of them is invalid,
parameter error is indicated, plus
*_StartAdrInErr and/or *_StartAdrOutErr will
be set.
Configuration Error can be caused by:
• Input - or output length > 100 words
• Input + output length > 180 words
• Input length < 2 words while CPU status
should be included.
• Input - or output length causing errors indi-
cated by *_EndAdrInErr, *_EndAdrOutErr
*See Note
*_StartAdrInErr BOOL R Incorrect start
address for
slave input
area
FALSE: No error
TRUE: There is an error in the slave input area
mapping. The start address of the area as
specified in the Set_Prm telegram is invalid for
this CPU type.
The BF indicator is BLINKING to indicate a con-
figuration- or parameterisation error; no I/O
data is transferred between master and slave
units.
Name of Device Variable for CJ-
series Unit
Type R/W Description Function
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