The MELSECNET/H Network module features improved usability while maintaining compatibility with the MELSEC-Q Series equivalent module (QJ71LP21-25). Existing MELSEC-Q Series assets such as programs, network parameters, and cables can be utilized, making replacement with the MELSEC iQ-R Series easier.
MELSEC iQ-R Series modules can be added to the existing MELSECNET/H Network consisting with MELSEC-Q Series modules. A redundant system is supported, allowing replacement of the existing MELSEC-Q Series redundant CPUs.
MELSECNET/H network module specifications
Item | RJ71LP21-25 | |
---|---|---|
Communication speed (bps) | 25 M/10 M (MELSECNET/10 mode 10 M) | |
Network topology | Duplex loop | |
Communication cable | Optical fiber cable | |
Max. station-to-station distance | 25 Mbps | 200 m (SI optical fiber cable), 400 m (H-PCF optical fiber cable), 1 km (broadband H-PCF optical fiber cable), 1 km (QSI optical fiber cable/broadband silica glass optical fiber cable) |
10 Mbps | 500 m (SI optical fiber cable, 1 km (H-PCF optical fiber cable), 1 km (broadband H-PCF optical fiber cable) 1 km (QSI optical fiber cable/broadband silica glass optical fiber cable) |
|
Overall cable distance (km) | 30 | |
Max. number of connectable stations | 64 (control station: 1, normal station: 63) | |
Maximum link points per network | ||
Link relay (LB) | 16384 points (MELSECNET/10 mode: 8192 points) | |
Link register (LW) | 16384 points (MELSECNET/10 mode: 8192 points) | |
Link input (LX), link output (LY) | 8192 points | |
Network mode | PLC to PLC network | |
Function | ||
Firmware update*1 | ●*1 |