Multi-Tech Systems 7500 Detailed Module Operation, Normal State, Pulse Width, Pulse mode KYZ mode

ION 7500 / ION 7600 User’s Guide Detailed Module Operation

Detailed Module Operation

The Calibration Pulser module integrates the Source input, determines how many KYZ transitions or complete pulses it must generate from the Kt setup register, and sends the output to the hardware channel specified in the Port setup register.

Depending on the number of KYZ transitions or complete pulses output, the

Calibration Pulser module operates in a normal, maximum, or an overload state.

Normal State

Pulse Width

(e.g. duration of a lit LED)

Pulse mode

KYZ mode

High-Low transitions

High

Low

High

Low

Time

A value entered into the Pulse Width register describes the on-time of the pulse (i.e. the time period that an LED is lit or relay is closed). In normal operation, the on- time of the pulse is significantly shorter than the off-time.

KYZ mode indicates a transition (from high to low or vice versa), so Pulse Width typically has no effect, except in an overload state. The on-time and off-time of a KYZ transition is equal in normal and maximum states.

The diagram above shows four complete pulses for the Calibration Pulser module in PULSE mode, and four transitions for the Calibration Pulser module in KYZ mode. If the Kt register was set up to send a pulse or KYZ transition for 1.8 energy- hours on each module respectively, then both modules have equal energy-hours output.

Digital and Analog I/O Technical Note Page 221