User`s manual

• From the FG terminal at the rear side of GP unit, please take ground-
ing exclusively [within ground resistance of 100
Ω].
9 Precaution for Grounding
11 Replacing the Backlight
10 Precautions for Input/Output Signal Lines
• Input and Output signal lines must be separated from the power con-
trol cables for operational circuits.
• if this is not possible, use a shielded cable and the shield should be
grounded.
• The backlight on this unit can be replaced.
For an explanation of how to replace it, please refer to the G-477R/
577R Series User’s Manual (sold separately) or the instruction manual
which comes with replacement backlights (sold separately).
Applicable backlight models
GP unit Backlight model
GP577R-TC11 GP577RT-BL00-MS
GP577R-SC11 GP577RS-BL00-MS
• Using any backlight other than the applicable models shown
above may cause an accident or breakdown.