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Revision History
A manual revision code appears as a suffix to the catalog number on the front cover of the manual.
The following table outlines the changes made to the manual during each revision. Page numbers refer to the
previous version.
Revision code Date Revised content
1 September 1999 Original production
2 May 2000 Modifications for the addition of an Expansion I/O Block as follows:
Page xvi: “Expansion cable” changed to “Expansion I/O Cable.”
Page 2: Processing speeds changed at bottom of page.
Pages 2, 6, 7, 8, 9, 10, 15, 23, 32, 41, 83, 84, 86, 100, 102, 104, 105, 110:
Information on Expansion I/O Block added.
Page 9: Table added on clock accuracy.
Pages 15, 35, and 88: Added information on Temperature Control Units.
Page 40: Noise immunity specification changed.
Pages 59, 62, 65, and 67: Note added to Terminal Connections.
Pages 61, 68, 210: Circuit configuration corrected.
Pages 75 and 77: Information added on write life expectancy.
Page 93: Information added for Link Adapter cables.
Page 110: Dimensions corrected.
Page 128: Note added under table.
Page 181: Function codes for JMP and JME corrected.
Page 204: Note added and last sentence on page corrected.
Page 206: Graphic corrected.
Page 207: Table corrected.
Page 209: Words deleted from Analog input storage words specification.
3 June 2001 Page xvi: Precaution about mounting or dismounting Units with the power ON
added.
Page 42: Explanation of CQM1H and CQM1 timing differences with respect to
the Reception Completed Flags and Reception Overflow Flags added.
Pages 138: Note about DIP switch pin 6 added.
Page 212: Precautions regarding the use of Absolute Encoders added.
04 August 2002 Pages 202, 212, and 221: Callouts changed in the top graphic.
Page 212: Callouts changed in middle graphic.
Page 220: Callouts changed in graphic.
05 April 2003 Information on upgrades made to new version of CQM1H CPU Units added.
06 May 2004 “CompoBus/D” unified to “DeviceNet.”
Pages xviii and xix: EN standard numbers corrected.
Page 44: DC output accuracy added.
Page 73: Minimum switching capacity added.
Page 88: DeviceNet Unit added to top table.
Page 114: Information on DIN Track Insulation Spacers added.
Page 121: Note and diagram added.
07 August 2005 Page v: Information on general precautions notation added.
Page xi: Information on liability and warranty added.
Cat. No. W363-E1-07
Revision code
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