User manual

Toolbox 32 User Manual 1.47d www.cse-semaphore.com/mykingfisher

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Configuration - I/O Modules List Options

Scan Priority: (All IO modules) Three priorities are available - High (read IO every scan interval), Medium

(read IO once every 3 scan intervals) and Low (read IO once every 10 scan intervals). By default, the scan

priority is set to High. For some large RTUs, rapidly scanning all the analog inputs slows down the RTU and

is unnecessary. To speed up large RTUs, the analog input modules can be configured to have a Low Scan

Priority. Note: a Scan Priority of High is always used by PC-1 RTUs.

Scan Rate: (AI-4 only) The AI-4 module has a configurable scan rate of 1-10 seconds. When not

configured, the scan rate defaults to 8 seconds.

Failsafe Outputs? (DO-1, DO-2/5/6, IO-2/3 digital outputs. Not supported by IO-4) If the box is ticked and

there is no comms activity between the processor and the IO module on the backplane for 10 seconds, the

IO module assumes that the processor has failed and turns off its digital outputs. If not ticked (default), all

digital outputs will hold their last value.

Note 1: To use failsafe outputs the IO module must contain I/O code version A17 or newer. This can be

determined using the module register #YMVERss=17+ (where ss=slot number) eg. to determine the I/O code

version of a module in slot 14, use ladder logic to copy #YMVER14 to a local register. The local register will

then contain the code version.

Note 2: Failsafe outputs are not currently implemented for analog outputs. All analog outputs will hold last

setting upon failure of backplane communications.

Channel Range: (AI-10 only) The current or voltage input range for all 8 channels. The available options

are: (none), 4-20 mA, 0-20 mA [default], +/- 10V, +/- 20mA (5V) and +/- 10mA (2.5V). When (none) is

selected, no configuration is downloaded to the AI-10 module and the default 0-20 mA range is used. Note:

in order to use the +/- 10V channel range, the current sensing resistors must be removed from the AI-10.

When using the +/- channel ranges, the AI-10 sets bit 16 of the analog input register if the current is

negative. If the input goes slightly negative (when floating around 0%), the analog input register will return a

very large value (-0.001mA to -20mA =65535 to 32768 respectively). To prevent unnecessary exception

reports, bit 16 should be ignored. For the 0-20 mA or 4-20 mA ranges, the input will return zero if the current

is negative or below 0 or 4 mA respectively.

Battery Type: (PS-11/21 only) Generic, Sealed Lead-Acid or NiCad. The PS-11 has intelligent battery

charging that is varied according to the battery type.

Battery: (PS-11/21 only) 6.5 to 25AH. The size of the battery to charge.