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
Installation
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
Environment
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
Interface
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 Interface
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 status + Software Switches.
1 word status information from the host CPU, containing operation status
and (see 3-8 CPU Status Information). 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).
• Inputs+outputs must be 180 words or less
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