Fuji Electric Faldic-a Series, User Manual, Page: 105 / 251

MHT258a (Engl.) 5-22
The last 8 bit of the 40 bit data of current position output is for check sum, This is the resultant lower 8 bit after each 8 bit in the current
position 32 bit data is added. Make sure that the addition data executed by the host controller is same as the transmitted data.
Terminal OUT 4 [DATA1] outputs 2 bit data on MSB side.
See Appendix 2 for the example program.
5.4.6 Deviation excessive
This function sets the deviation amount of deviation excessive (alarm detection) of amplifier.
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Related items
Basic parameter 54
Para. Name Setting range Initial value Change
54 Deviation excessive width 10 to 65535 (in increments of 1)
[x 100 pulse] 10000 Always
* Setting is made by motor encoder pulse count.
Sets the pulse count for alarm detection about deviation excessive. Initial value at factory setting is 10,000 and detects the deviation
amount with 1,000,000 pulses. At factory setting, deviation excessive is detected when the difference (deviation) between command
position and feedback position becomes approximately 15.2 revolution when converted to motor rotation.
The deviation excessive width is set for use with alarm detection, and becomes effective when the stopping status is in “servo lock” in
position control and speed control.