Option external IO

External IO description

The external analogue and digital inputs and outputs are based on Wago Fieldbus Coupler with Modbus TCP protocol.

External IO module includes:

• 2 x 4 channel Digital Input ref: 750-402

• 2 x 4 channel Digital Output ref: 750-504

• 2 x 2 channel Analogue Output ref: 750-552

• 2 x 4 channel Analogue Input ref: 750-452

The configuration of the IOs is prepared before shipment and is described in the project file, and the datasheet of the IO modules are provided in the gauge documentation.

Configuration of the external IO module

Wago module admministration

An integrated Web server can be used for configuration and administration of the module, by connecting a browser to IP address (refer to the project file to get the IP address).

For authentication, 3 different password-protected user authorization groups are provided as standard:

User Group	Default Password	Access Rights
admin	wago	Read/write access to all WBM pages as well as passwords modification
user	user	Read/write access to all WBM pages, but no write authorization on WBM-page “Administration”
guest	guest	Read only

External IO configuration

The configuration file is available in the “plugin” folder.

Each plugin folder includes a file defining the IO configuration (label associated, scale…). The plugin can be selected in the “Setup gauge” menu.

Configuration file example:

{
    "aiExt": {
        "AI1": {
            "Label": "Temperature",
            "Min_4mA": 500,
            "Max_20mA": 1000,
            "Default": 900
        },
        "AI2": {
            "Label": "Speed",
            "Min_4mA": 0.7,
            "Max_20mA": 5.4,
            "Default": 4.0
        }
    },
    "aoExt": {
        "AO1": {
            "Label": "Width",
            "Min_4mA": 600,
            "Max_20mA": 1650,
            "Default": 600
        },
        "AO2": {
            "Label": "Width_dev",
            "Min_4mA": -200,
            "Max_20mA": 200,
            "Default": 0
        },
        "AO3": {
            "Label": "Center",
            "Min_4mA": -200,
            "Max_20mA": 200,
            "Default": 0
        },
        "AO4": {
            "Label": "Temperature",
            "Min_4mA": 0,
            "Max_20mA": 1000,
            "Default": 900
        }
    },
    "diExt": {
        "0": [
            "Measure_disable",
            0
        ],
        "1": [
            "Last_pass",
            0
        ],
        "2": [
            "Water_alarm",
            0
        ],
        "3": [
            "Air_alarm",
            0
        ]
    },
    "doExt": {
        "0": [
            "Alarm",
            1
        ],
        "1": [
            "Alarm",
            0
        ],
        "2": [
            "Warning",
            0
        ],
        "3": [
            "Measuring",
            0
        ],
        "4": [
            "In_view",
            0
        ],
        "5": [
            "Width_out_of_range",
            0
        ],
        "6": [
            "Measure_disable",
            0
        ]
    },
    "aiExt_min": 6553,
    "aiExt_max": 32767,
    "aoExt_min": 6553,
    "aoExt_max": 32767,
    "ipAddressIOExt": [
        "172.16.101.78",
        502
    ]
}

Diagnostic

The External IO module data can be displayed on a webbrowser url:

• gaugeIP/external_io or gauge_name/external_io