9.9.3: Normal Mode

The device is polling the inputs at 100Hz (once every 10 msec), debouncing the inputs and incrementing the Transition Accumulators for each channel as appropriate.

The inputs are represented by Channel 1 in the LSB through Channel 8 in the MSB of the low order byte of the register.

The Modbus Map for the Digital Status Input Modules (and operating details) can be found in the Modbus Communicating I/O Modules Manual.

9.10: Specifications

The following multiple analog or digital I/O modules mount externally to the Nexus Socket Meter. The Nexus 1262 and 1272 Units DO NOT SUPPORT I/O MODULES. Use an additional power supply, such as PSIO, to provide I/O capability. See Chapter 6 for mounting diagrams.

Analog Transducer Signal Outputs (Up to two modules can be used with the Nexus.) 1mAON4: 4 Analog Outputs, scalable, bidirectional.

1mAON8: 8 Analog Outputs, scalable, bidirectional.

20mAON4: 4 Analog Outputs, scalable.

20mAON8: 8 Analog Outputs, scalable.

Analog Transducer Inputs (Multiple modules can be used.) 8AI1: 8 Analog Inputs 0–1mA, scalable and bidirectional. 8AI2: 8 Analog Inputs 0–20mA, scalable and bidirectional. 8AI3: 8 Analog Inputs 0–5Vdc, scalable and bidirectional.

8AI4: 8 Analog Inputs 0–10Vdc, scalable and bidirectional.

Digital Dry Contact Relay Outputs (Multiple modules can be used.)

4RO1: 4 Relay Outputs 10 Amps, 125Vac, 30Vdc, Form C.

Digital Solid State Pulse Outputs (Multiple modules can be used.) 4PO1: 4 Solid State Pulse Outputs, Form A KYZ pulses.

Digital Inputs (Multiple modules can be used.)

8DI1: 8 Digital status inputs Wet/Dry Auto Detect, up to 300Vdc.

Other I/O Accessories

PSIO: External Power Supply which is necessary if you are connecting more than 2 to 4 I/O modules to a Nexus 1250/1252 Meter. The number is determined by the type of I/O Module.

MBIO: Bracket for surface-mounting I/O modules to any enclosure.

Electro Industries/GaugeTech Doc # E107706 V1.25

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Electro-Voice 250, 1252 operation manual Specifications