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1.4 Communication Specifications
Item
Reference clock
Transmission speed
Communication code
Communication protocol
Communication system
Communication I/F
Connection method
Transmission distance
Number of local devices
connected
Time per cyclic
communication
Data communication time
Communication data size
Measures for communication
cable disconnection
Note 1: 1 word = 2 bytes = 16 bits
Note 2: 1 to 3 words for machines with G9003 installed (P module)
40 or 80 MHz (depends on the system)
2.5M, 5M, 10M, 20Mpbs
NRZ
Motionnet (Local network system by Nippon Pulse Motor)
Half-duplex communication
RS-485, pulse transformer
Multi-dropped
50m
32
At 20Mbps:
8 local devices on one line
16 local devices on one line
32 local devices on one line
Transmission of 3 words (writing to one register in a motion device) .... 19.3μs (Note 1)
1 to 64 words / frame (Note 2)
With motion stop upon detecting disconnection
Table 1.4-1 Communication specifications
12
Specifications
.... 0.12ms
.... 0.24ms
.... 0.49ms
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