IC695ALG708 RX3İ 8 CHANNEL ANALOG OUTPUT MODULE

IC695ALG708 Module Features：
Completely software-configurable, no module jumpers to set

Individually enable or disable channels
Clamping and Alarm Limits

Latching of Alarms
Configurable output bias
User-defined scaling
High alarm, low alarm detection and reporting
Module fault reporting
Configurable Hold Last State or Output Defaults. Supportsdiagnostic point fault contacts in the logic programFlash memory for future upgrades
Module Status, Field Status, and TB LED: Positive and negative Rate of Change AlarmsTerminal Block insertion or removal detection

Analog Output Commanded Feedback
Module returns a copy of the analog output data received from the CPU in its corresponding channelof the analog input shared memory.OutputFeedback can be monitored to check the values being sent to the channels. The data is in the same scaled format as the output data for each channel. During normal operation, this feedback data should match the actual output data after one or more PLC scans of module inputs. During faults, ramping, over-range, and clamping conditions, the analog output data may differ from the commanded output.

Over-Temperature
If Over-Temperature is enabled, the Module generates an Over-Temperature alarm if the internal temperature of this module is too great for the number of outputs that are on at the same time. In addition to the configurable options for Over-Temperature fault reporting and interrupts, an over-temperature condition is also indicated by the Over-Temperature bit in the Status Reference data of this module. Detection of the Over-Temperature status bit is always enabled.

Range Type
Each channel on the  Module that will be used should be configured for Current/Voltage. Its voltage or current range and other parameters can then be configured as needed. If the channel output will not be used and is not wired, select the "Disabled" option. If a channel is disabled, it is not necessary to configure any of its other parameters.

If the channel is wired to a current output, but is not being used, select "Disabled Current". This will set the output current of that channel to 0mA (the output voltage of that channel will be non-zero).

Output Defaults
If Hold Last State is enabled, an output will hold its last commanded value when the CPU indicates Outputs Not Enabled, or if one of the fault conditions listed below occurs. If Hold Last State is disabled, the output is commanded to go to the Default Value. The Default Value must be set
within the selected output range. If both Default Value and Ramp Rate are enabled, the channel will ramp to the default value. Fault conditions are:
• CPU outputs are not enabled
• Backplane power is not ok. In that case, there is no ramping, even if ramping has been enabled.
• Loss of communications from the CPU.
• Loss of I/O communications.
• Loss of field power.

Outputs Default Notes
• Hot Removal of Module in an I/O Enabled mode will cause all outputs to Hold Last State (even channels configured for Force to Default Value). If that operation is not desirable, the outputs can be forced to default by first turning off field power and removing the Terminal Block of this module before hot-removing the Module.

• Resetting the Module using SVC_REQ 24 causes all channels to hold the Last State, even if the Default Value is configured. The application program must handle output defaulting before execution of the Service Request.

• Default Ramp Rate configuration is ignored if backplane power from the power supply is lost. Channels configured for the Default Value go to the default value immediately.

• The first time a configuration is stored following a return of backplane power, the Default Ramp rate is not used. Any channel configured for a Default Value goes to its default value immediately. If analog power was not lost and the same configuration is restored on the next power-up, the channel state is unchanged from the time the power was lost. The Default Ramp Rate is used for any subsequent reconfiguration.