Appendices
A-2
CJ-series PROFIBUS Slave Unit Operation Manual for NJ-series CPU Unit (W510)
A-1
Differences of NJ Series from CJ
series
You can use the CJ1W-PRT21 PROFIBUS Slave Unit with the NJ-series Units.
If this Unit is used with the NJ Series, some functions become unavailable compared to when it is used
with the CJ Series.
The following shows differences between the NJ Series and the CJ-series for each function of this
PROFIBUS Slave Unit.
With the NJ Series, device variables for CJ-series Unit are used for the PROFIBUS Slave Unit func-
tions.
The following tables show how the words and bits of CJ-series I/O memory or the NJ-series memory
used for CJ-series Unit correspond to the NJ-series device variables for CJ-series Unit.
Start address of special I/O Unit area: n = 2000 words + Unit number x 10 (Unit number: 0 to 95)
Start address of the special I/O Unit DM area: m = Unit number x 100 (Unit number: 0 to 95)
A-1-1
Functional Difference
Item
Function in CJ series
Function in NJ series
Responding to DPM1 and
DPM2 Masters
Data_Exchange, Slave_Diag, Set_Prm,
Chk_cfg, Global_Control
(SYNC/FREEZE/CLEAR)
Same as on left
Configurable with In, Out, and
In/Out modules
1,2,4,8 and 16 words. Total of 0 to 100 words
in + 0 to 100 words. Sum of Input and OUt-
put size can be up to 180 words.
Same as on left
CPU status information
Program, Monitor, Run modes. Output OFF,
CPU Waiting, CPU Executing, CPU Initializ-
ing, Non-Fatal PLC Error, Fatal PLC Error.
Program and Run modes. CPU Executing,
CPU Initializing.
Extended diagnostics/Device
related diagnostics
Output OFF, CPU waiting, Non-fatal error,
Fatal error, Program mode, Invalid Start/End
address input area, Invalid Start/End
address output area, Error code as in PLC.
Program mode, Invalid Start/End address
input area, Invalid Start/End address output
area.
A-1-2
Differences in Access Methods from a User Program
