IC754VSF12CTD Touch screen instructions

IC754VSF12CTD Touch screen instructions

Process Control Relays You may use explicit messages to perform the following tasks: • Setting or getting relay trip points • Setting or getting relay activation direction (polarity) • Setting or getting relay hysteresis • Setting or getting relay assignments • Setting or getting disabled/enabled state of relays The module has two single-pole double-throw (normally open/normally closed) relays. Each relay can be independently assigned to vacuum or differential pressure. Each relay has a programmable activation direction and trip point. The trip point is a value representing pressure at which the relay activates. • When the module is shipped from the factory, relay trip points are out of range, disabled, and will not operate.• You must configure relays to make them operable. In default mode, trip point relays activate with decreasing pressure and deactivate at a higher pressure than the activation pressure, as illustrated in Figure 3-2. You can reverse relay polarity, so trip point relays activate with increasing pressure and deactivate at a lower pressure than the activation pressure, as illustrated in Figure 3-3.

Get Enable/Disable Status of Relays

 Use the explicit messages listed in Table 3-21 to get the enabled or disabled status of a relay. After relays have been made operable, you may use explicit messages to disable any specified relay. If you disable a relay, you must re-enable it to make it operable. You must reconfigure the relay to re-enable it. • You may change the deactivation pressure by entering REAL data that represents hysteresis as a percentage of the activation pressure. • Valid hysteresis values are any activation pressure percentage, from 5% to 100%, that is divisible by 5. Use the explicit messages listed in Table 3-19 to configure trip point relays.You can change the deactivation pressure by entering REAL data that represents hysteresis as a percentage of the activation pressure. Use the explicit messages listed in Table 3-19 to configure trip point relays.

Micro-Ion Gauge Controls

 You may use explicit messages to perform the following tasks: • Turn the Micro-Ion gauge ON or OFF • Get the Micro-Ion gauge ON/OFF state • Set or get the Micro-Ion gauge active filament • Set or get the Micro-Ion gauge degas ON or OFF state • Set the emission current switch point for Micro-Ion gauge You may use polled I/O to perform the following tasks: • Turn the Micro-Ion gauge OFF/ON • Initiate or terminate the Micro-Ion gauge degas • Select filament 1 or 2 • Select emission level Turn the Micro-Ion Gauge ON or OFF You may use explicit messages or polled I/O to turn the Micro-Ion gauge OFF or ON. Using DeviceNet explicit messages: Use the explicit message listed in Table 3-24 to turn the Micro-Ion gauge OFF or ON.