Specifications
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 CONCISE GUIDE FANUC 158 
NB: by ABSOLUTE shift we mean the insertion of a new value, whereas ADDITIONAL shift refers to a 
value to be added to an existing one. 
16.0 MACHINE PARAMETERS 
Machine parameters are used to fully represent the characteristics of servo-motors, as well 
as the specifications and the functions of the machine tool 
16.1 HOW TO MODIFY A MACHINE PARAMETER
To modify a machine parameter, follow this procedure: 
1 -  Select MDI MODE on the operator’s panel 
2 -  Press SETTING PAGE until the PREPARATION (MANUAL) window appears on the screen 
3 -  Write 1 (ENABL) PARAMETER WRITING 
4 - Press the key INPUT 
5 -  Press PARAMETER PAGE 
6 -  Press the soft key OPER until RIC N0 appears on the screen 
7 -  Type in the number of the parameter to be modified 
8 -  Press the soft key RIC N0 
9 -  Write the new value to be assigned to the machine parameter 
10 - Press the key INPUT 
11 - Press SETTING PAGE until the window PREPARTION (MANUAL) appears on the screen 
12 - Write 0 (DISABLE) PARAMETER WRITING 
If parameters feature 8 bits, values range from bit n. 0 to bit n. 7 (from right to left) as shown in the 
table below: 
Bit 7  Bit 6  Bit 5  Bit 4 
Bit 3  Bit 2  Bit 1  Bit 0 
For further details on how to modify machine parameters read appendix 7 of the “ PMC Manual” included 
in the machine documentation










