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Software Manual 163

Automation Tab

CPU Monitor Timeout (ms): This option is used to make the I/O fail safe if the main CPU stops working. The main CPU

controls communication, IODB and code written in C. If the main CPU stops working, the I/O processor will detect that

in the time defined in this field. Suggested timeouts are 1000ms to 10000ms. Timeouts faster then 100ms are not rec-

ommended. The maximum allowed timeout value is 0xFFFF(65535ms).

Setting this value to 0 will disable the feature. The default value for this field is 0 (Timeout Disabled).

Select the “Timeout Actions” field to define what the I/O should do when a CPU timeout occurs.

Timeout Actions: When a timeout to the CPU occurs, the selected “Timeout Action” will take effect.

When “Drop Physical Outputs” is selected, all outputs are dropped to and OFF

stated.

When “No Action” is selected, outputs will hold their last known value.

In a discrete output module, the OFF state is simply turning the outputs off, in an analog output module, OFF means to set

all outputs to a nominal calibrated zero output. TPO Outputs will be set to output 0, but may require the normal TPO inter-

val to elapse before the output will go off.

Discrete Input

• Click on the Discrete Input button and the following dialog window will appear:

Channel: A channel is a physical IO point that can be either analog or digital.

Modbus Address: Configuration must be sequential. Addresses are fixed sequentially from the base address.

Input Mode: This field defines the filtering mode of the Discrete Input channel. Select an option from the drop down

list.

Disabled: Selecting this option will completely disable the channel and a zero (0) will be reported.

Slow Response (filtered): When this option is selected, the Discrete Input will have software filtering applied to the input.

Software filtering is suitable when the input is connected to a mechanical switch or relay because it will eliminate contact

bounce. In this mode, counting is limited to a maximum of 10 Hz.

Fast Response (no filtering): When this option is selected, the discrete input will have no filtering applied to the input. This

option is suitable for solid state switches where no contact bounce is present.

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RAM 6000 Informations techniques Page 163