Mitsubishi Electric MELSEC iQ-RD77GF16, Руководство пользователя

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2 SPECIFICATIONS
2.2 Performance Specifications of the RD77GF
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The performance specifications of CC-Link IE Field Network is shown below.
*1 The maximum number of points that a master station can assign to one station. A local station can receive the range assigned to other
stations using the cyclic transmission function.
*2 The cycle that each module performs the synchronous control via a network using the synchronous communication function.
*3 A switching hub supporting synchronous communication is required for the star topology.
Item RD77GF4 RD77GF8 RD77GF16 RD77GF32
Maximum number of link points per
network RX 16K points (16384 points, 2K bytes)
RY 16K points (16384 points, 2K bytes)
RWr 8K points (8192 points, 16K bytes)
RWw 8K points (8192 points, 16K bytes)
Maximum
number of link
points per
station Master station RX 16K points (16384 points, 2K bytes)
RY 16K points (16384 points, 2K bytes)
RWr 8K points (8192 points, 16K bytes)
RWw 8K points (8192 points, 16K bytes)
Local station
*1
RX 2K points (2048 points, 256 bytes)
RY 2K points (2048 points, 256 bytes)
RWr 1K points (1024 points, 2K bytes)
256 points when communication mode is "High-Speed"
RWw 1K points (1024 points, 2K bytes)
256 points when communication mode is "High-Speed"
Safety
communications Maximum number of safety
connectable stations per network 121 stations
Maximum number of safety
connections per network 1814 connections
Maximum number of safety
connections per station 120 connections
Maximum number of link points per
safety connection 8 words (input: 8 words, output: 8 words)
Inter-module synchronization cycle
*2
(with
synchronization communication)
0.50 ms/1.00 ms/2.00 ms/4.00 ms
Transient transmission 1: N communication (such as monitor, program upload/download)
Dedicated instructions from sequence programs
Transient transmission capacity 1920 bytes maximum
Maximum number of transient transmissions per link
scan 4
Communication speed 1 Gbps
Network topology Line topology, star topology
*3
Communication cable • Ethernet cable which satisfies 1000BASE-T standard:
Category 5e or higher, straight cable (double shielded, STP)
• RJ45 connector
Maximum station-to-station distance 100 m (conforms to ANSI/TIA/EIA-568-B (Category 5e))
Overall cable distance Single master
configuration Line topology: 12000 m (when 121 stations are connected)
Star topology: Depends on the system configuration.
Number of cascade connections 4 levels maximum
Maximum number of
connectable stations Single master
configuration 121 stations (master station: 1, slave station: 120)
Maximum number of networks 239
Communication method Token passing