ABB DO890 3BSC690074R1 Digital output module

ABB DO890 3BSC690074R1 Digital output module

HOLDTRIG HOLDTRIG – You can program HOLDTRIG to input or output the Hold Trigger signal for the module. You can use the Hold Trigger signal to place the module into Hold mode. This signal is also brought out to the front connector. All other pins are not connected. See the Timing Requirements and Communication Protocol section later in this chapter for more detailed information on timing. The signals on the rear signal connector can be classified as analog output signals, digital I/O signals, or timing I/O signals. The following section contains signal connection guidelines for each of these groups.

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