Bronkhorst DeviceNet slave interface - Manual (Page 42)

BRONKHORST ®
Page 42 DeviceNet interface 9.17.026
12.1.3 DeviceNet error description
SITUATION Description
Minor communication error
(red LED: 0.1 sec on, 2 sec off) Each communication error will be seen as a minor communication error
except for when the instrument is in the communication fault state.
Instrument will stay in the on‐line state. These errors will be recovered
automatically.
Examples of minor errors:
When instrument is only member on DeviceNet network
When an I/O connection time‐out has occurred
No bus power
(red LED: 0.2 sec on, 0.2 sec off) Instrument hardware detects that +24 Vdc in DeviceNet cable is not present.
Serious communication error
( red LED: 2 sec on, 0.1 sec off) Instrument will get in communication fault state. This will happen at
duplicate MAC ID or at bus‐off event (This node is faulty and is not allowed to
have any influence on the bus). This state can only be left by manual
intervention. Instrument needs a reset either by using the micro‐switch on
top of the instrument or a new power‐up. At duplicate MAC ID situation,
sending a new MAC ID via RS232 (e.g using FlowFix) could also solve the
problem.
12.2 T ROUBLESHOOTING HINTS AND TIPS
SITUATION Description
DeviceNet problems Check all DeviceNet settings at your master. Master and device settings for
use of memory modules must be the same. Make sure selected
configuration at device configuration for polled I/O is the same as the
settings at parameter data. See chapter 7 for more details.
Check MAC ID and Baud rate of device (slave).
Check cabling and bus termination of your DeviceNet system.
Check power supply. Instruments need +24Vdc.
Try to reset the instrument and/or restart your master.
Make sure all settings for your slave are downloaded to your master
(otherwise it won’t work).
Contact DeviceNet sales representative or service department.
Other (FLOW‐BUS) problems Contact Bronkhorst local sales representative or send e‐mail describing your
problem to: see service chapter.