20 NETA-21 remote monitoring tool
Connectors
Power supply input (X1)
• Signal level: 10 … 30 V DC, max. 2 A
• Connector type: Shrouded header for the wire plug, 2 pins,
pitch 5.00 mm / 0.19 inch
• Power consumption: typical 200 mA at 24 V (500 mA at 10 V)
Panel bus port 1 (PNL 1) and 2 (PNL 2)
• Signal level: EIA-485
• Communication protocol: Phloem over EIA-485
• Cable type: Ethernet CAT5, straight
• Connector type: Shielded 8P8C modular jack (RJ45)
• Maximum segment length: 100 m / 328 ft
Ethernet port 1 (ETH 1) and 2 (ETH 2)
• Media: 10Base-T / 100Base-TX (10 Mbit/s or 100 Mbit/s)
• Cable type: Shielded twisted pair (STP), both straight-through and crossover
cables are supported (HP Auto-MDIX)
• Connector type: Shielded 8P8C modular jack (RJ45)
• Termination: Internal
• Maximum segment length: 100 m / 328 ft
EIA-232 port (X2)
• Physical layer: EIA-232, galvanic isolated
• Connector type: D-sub 9-pin male
EIA-485 port (X3)
• Media: Shielded twisted pair cable, impedance 100…150 ohm
• Serial communication type: Asynchronous, half-duplex RS-485
• Physical layer: EIA-485, galvanic isolated
• Communication protocol: Modbus
• Connector type: Shrouded header for the wire plug, pitch 5.00 mm / 0.19 inch
• Maximum length: 1200 m / 3 937 ft
SD/SDHC connector
• Supports up to a 32-GB SD/SDHC card
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