1 Features and System Configuration
1-14
CJ-series PROFIBUS Slave Unit Operation Manual for NJ-series CPU Unit (W510)
1-3
PROFIBUS Slave Unit
1-3-1
Specifications
Model Code
CJ1W-PRT21
Inst
allation
Maximum number of Units per
CPU system
40
Current consumption
400 mA (maximum) at 5 VDC from CPU power supply
Weight
90 g (typical)
Storage temperature
-20
o
C to +70
o
C
E
n
viron
m
en
t
Operating temperature
0
o
C to +55
o
C
Operating humidity
10 to 90% (non-condensing)
Conformance to EMC- and
environmental standards
EN50081-2
EN61131-2
Switch settings
Special I/O Machine number (00-95) by 2 rotary switch
PROFIBUS-DP node address (00-99) by 2 rotary switches
User
Int
erface
Indicators
Unit status: RUN (green indicator), ERC (red indicator)
Network status: COMM (green indicator), BF (red indicator)
CPU status: ERH (red indicator)
No. of CIO words allocated
CPU -> Unit: 1 word control data
Unit -> CPU: 1 word status data
CPU I
n
terf
ace
No. of DM words allocated
Unit -> CPU: 8 words of Unit setup information
Amount of I/O data per Unit
Fixed:
2 words CIO area (one in, one out) for Unit Software Switches.
1 word status information from the host CPU, containing operation status
and (see
). This information will be sent to the
PROFIBUS master:
•
as extended diagnostics, only at a change of data content.
•
optionally, attached to the I/O data, each PROFIBUS cycle.
Variable:
2 user-defined areas for PROFIBUS I/O data, with the following restric-
tions:
•
Up to 100 words input in one CPU area (CIO, H, D, EM).
•
Up to 100 words output in one CPU area (CIO, H, D, EM).
•
outputs must be 180 words or less
