Epson RC620 Manual page 138

2. Installation
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 NOTE
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128
Change the settings of [Input Byte] and [Output Byte].
In this example, both of them are changed to 20 Bytes.
Change the setting of [DAP mode] if necessary.
Set [DAP mode] according to the PROFINET IO controller that you want to use.
Usually, select DAP Ver.2. DAP Ver.1 is available for the obsolete PROFINET IO
controller.
The PROFINET option does not have the alert function that is an optional function in
DAP Ver.2.
Click <Apply>.
Click <Close> and the following dialog box appears.
+
SPEL control part of the RC620 robot controller automatically starts rebooting.
Select [Setup]-[System Configuration] and display the [System Configuration] dialog
box.
Select [Inputs / Outputs].
RC620 Option Fieldbus I/O Rev.8