Analog expander records are used to monitor and control analog channels, allowing you to connect industrial automation devices to your Protege X system.
Name
-
Name: The name of the record in English.
English is the default system language for all records and is assumed to be the primary language.
-
Name (Second Language): The name of the record as it appears within the Protege X user interface when the operator's Portal Settings display language is set to a language other than English.
When the operator's display language is set to any language other than English, all 'Second Language' values become the primary value, and the English versions are displayed as the 'Second Language' value.
General
-
Invert Device Tamper: When this option is enabled the module's tamper input will be inverted. This should be enabled when the tamper switch has a normally open configuration.
-
Virtual Module: Enable this option to register the module as a virtual module. Virtual modules act as placeholders in the system, allowing you to program virtual inputs and outputs for use with programmable functions and other advanced features.
-
Physical Address: The network address of the module on the controller network. Connected expander modules can be addressed with the controller's Module Addressing function.
The maximum physical address available for analog expander modules is 32.
Commands
- This field is used to send programming commands to the device. It should only be used when specifically advised by ICT documentation or technical support.
Channel 1-4
- Enable Channel: When this option is enabled the analog expander will begin processing the analog channel. The channel can act as either an analog output (sending data) or an analog input (receiving data) depending on the hardware. When this option is disabled the channel will perform no function.
-
Channel Uses 0-20mA Input (Disabled Uses 0-10V): Each channel can be configured for either current or voltage operation.
- With this option disabled the input or output will operate in 0-10V mode.
- When this option is enabled it will operate in 0-20mA mode.
The option selected will depend on the connected devices.
In current mode the acceptable signal range is 0-20mA, which allows the connection of standard 4-20mA devices.
-
Preset DAC Output Power Up: When this channel is used for an analog output (DAC), enable this option to set the output to a fixed value when the module is powered up. The preset value is determined by the option below.
- With this option disabled, when the output is powered up it will be set to the last known value.
-
Preset To 100 Percent (Disabled Preset to 0): When Preset DAC Output Power Up (above) is enabled this option determines the state of the analog output when the module is powered up.
- With this option disabled the output will be set to 0% (the minimum value).
- When this option is enabled the output will be set to 100% (the maximum value).
-
Send ADC Value in Diff Mode: When this channel is used for an analog input (ADC), this option determines when the input values are sent to the controller.
- With this option disabled the analog value is sent to the controller at set intervals. The frequency of the updates is set in the Update Time below.
- When this option is enabled the analog value is sent to the controller only when it has changed by a defined amount (the diff). The amount the value must change before an update is sent is set in the Diff Comparison Value below.
- Log Channel Data: When this option is enabled all data updates from the channel are logged as events. This is useful for initial configuration and troubleshooting, but to save event storage should not be left enabled during normal operation.
-
Update Time: When the Send ADC Value in Diff Mode option is disabled the channel will send updates to the controller at regular intervals. This field sets the time between updates.
The data is averaged over the period of time being sampled. It is recommended that the update time is scaled to match the expected rate of change and required level of supervision. A long update time is generally sufficient and reduces the risk of 'spikes' in the data.
-
Diff Comparison Value: When the Send ADC Value in Diff Mode option is enabled the channel will send updates to the controller when the value has changed by a defined amount.
This field sets the diff value used to compare the current value with the most recent update.
Module Update
Clicking the button beside an expander record (only visible when hovering) opens the module update command window for that module.
Programming changes which alter the way hardware will operate require a module update to download the hardware configuration.
- Update Module: Performs a module update on the selected module. A module update command causes the module to restart.