Siemens SIMATIC ET 200L - General Protective Measures against Electrostatic Discharge; Damage

C-4
ET 200L Distributed I/O Device
EWA-4NEB 780600902-05
C.3 General Protective Measures Against Electrostatic Discharge
Damage
Make sure the personnel, working surfaces and packaging are sufficiently
grounded when handling electrostatically sensitive devices.You can thus
avoid electrostatic charging.
You should touch electrostatically sensitive devices only if it is unavoidable
(for example, during maintenance work). Hold modules without touching the
pins of components or printed conductors. In this way, the discharged energy
cannot affect the sensitive devices.
If you have to carry out measurements on a module, you must discharge your
body before you start the measurement by touching grounded metallic parts.
Use grounded measuring devices only.
Ensure Sufficient
Grounding
Avoid Direct
Contact
Guidelines for Handling Electrostatically Sensitive Devices (ESD)