5] Digital Outputs; [2.09.5] Digital Outputs; Overview - Siemens SIPROCESS GA700 Quick Start Manual

Continuous gas analysis

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7.8

[2.09.5] Digital outputs

7.8.1

Digital outputs on the basic device

Each basic device comes equipped with eight user-assignable digital outputs (relays) whose

output contacts can be switched. The digital outputs can be used for different tasks, for

example, signaling or control of valves. The corresponding functions can be assigned to

several digital outputs. These digital outputs can perform the following tasks:

● Status message (function check, operating states)

● Output of maintenance-related messages, for example: maintenance demanded,

● Output of fault messages

● Output of the current measuring range and/or the current process tag.

● Switchover of the process tag

● Output of limit violations

● Output of status of a result of logic operation

● Switching of solenoid valves

● Synchronization of AutoCal/AutoVal sequences of several devices ("Sync.", function

● Signaling of different diagnostic states

Additional information on the functions that can be used is available at Table A-1 LVZ1

(Page 81).

Information on the terminal assignment of the individual digital outputs in de-energized state

is available in the operating instructions of the device: Functions (Page 62).

Digital outputs on analyzer modules

In addition to the eight digital outputs of the basic device, each analyzer module also has

three digital outputs whose parameters cannot be assigned.

These digital outputs are responsible for transmitting the status information of the analyzer

module to specific applications. The assignment of the functions cannot be changed.

You can find additional information under Table 7-10 Analyzer module: permanently

assigned digital outputs (Page 63).

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