Term. mains power
the national power grid
Term. manually initiated
Initiated by the user, usually with a CR1000KD Keyboard Display
(p. 651), as
opposed to occurring under program control.
Term. mass storage device
USB: "thumb" drive. See appendix Data Storage Devices
(p. 653).
Term. MD5 digest
16 byte checksum of the TCP/IP VTP configuration.
Term. milli
The SI prefix denoting 1/1000 of a base SI unit.
Term. Modbus
Communication protocol published by Modicon in 1979 for use in
programmable logic controllers (PLCs). See section Modbus
(p. 91).
Term. modem/terminal
Any device that has the following:
o Ability to raise the CR1000 ring line or be used with an optically isolated
interface (see the appendix CS I/O Serial Interfaces
(p. 652) ) to raise the
ring line and put the CR1000 in the telecommunication command state.
o Asynchronous serial communication port that can be configured to
communicate with the CR1000.
Term. modulo divide
A math operation. Result equals the remainder after a division.
Term. MSB
Most significant bit (the leading bit). See the appendix Endianness
(p. 643).
Term. multi-meter
An inexpensive and readily available device useful in troubleshooting data-
acquisition system faults.
Term. multiplier
A term, often a parameter in a CRBasic measurement instruction, that
designates the slope (aka, scaling factor or gain) in a linear function. For
example, when converting °C to °F, the equation is °F = °C*1.8 + 32. The
factor 1.8 is the multiplier. See Term. offset
(p. 521).
520
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