Profibus Dp Troubleshooting; Examining A Problem - Epson RC90 Manual

4.2 PROFIBUS DP Troubleshooting

Exclusion
Every system has its special environment, conditions, specifications, and usages. This
guide is provided as a general reference for troubleshooting a PROFIBUS DP network.
Every effort has been made to ensure the information is accurate. However, we do not
guarantee the complete accuracy of the information and thus we decline any liability for
damages or costs incurred by the use of this troubleshooting.
Before examining a problem on the network, please ensure that your established
PROFIBUS DP system satisfies network specifications. (Refer to this troubleshooting and
the section 2.2.2 PROFIBUS DP Network Construction.)
Tools
Prepare the following tools for troubleshooting.

4.2.1 Examining a Problem

4.2.1.1 Scanner Board Diagnostic LEDs
The PROFIBUS DP board used with EPSON RC+ has two status display LEDs. The
layout of the LEDs is shown in the following figure.
PCU-DPIO
The Communication Status LED is on the left and the Physical Error LED is on the right
seen from the rear panel.
The Communication Status LED is referred to as the ST LED (ST) in this section.
The Physical Error LED is referred to as the BF LED (BF) in this section.
RC700 / RC90 Option Fieldbus I/O Rev.14
Philips screwdriver
Flat-blade screwdriver
Tester
4-pin Terminal
Watchdog Port
(Do not use this port.)
Status Display LED (2)
PROFIBUS-DP Port
LED (2)
(Unused)
RJ45 Connector
(Unused)
4. Troubleshooting (PROFIBUS DP)
Jumper for Board Address Setting
JP1
JP1
0
1
C0 C1 C2
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