Omron SYSMAC CPM2B-S001M-DRT Operation Manual page 42

Board Components and their Functions
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Indicator Status
PERI ON Data is being transferred via the peripheral port.
(yellow)
OFF The peripheral port is not being used.
RD Flashing Data is being received via CompoBus/S.
(yellow)
OFF Data isn't being received via CompoBus/S.
SD Flashing Data is being transmitted via CompoBus/S.
(yellow)
OFF Data isn't being transmitted via CompoBus/S.
ERC Flashing A CompoBus/S communications error occurred.
(red)
OFF A CompoBus/S communications error hasn't occurred.
6. DeviceNet Indicators
The following indicators show the status DeviceNet communications.
Indicator Color Status
MS Green ON
Flashing Incomplete settings (reading switch settings)
Red ON
Flashing Non-fatal error such as incorrect switch settings
--- OFF
NS Green ON
Flashing Online/Communications not established
Red ON
Flashing Non-fatal communications error
--- OFF
7. Input Indicators
The input indicators are lit when the corresponding input terminal is ON.
The status of an input indicator will reflect the status of the input even when
that input is being used for a high-speed counter.
Note a) When interrupt inputs are used in interrupt input mode, the indica-
tor may not light even when the interrupt condition is met if the in-
put is not ON long enough. When a high-speed counter is being
used, the indicator may not light depending on the speed of the
pulses.
b) Input indicators will reflect the status of the corresponding inputs
even when the PC is stopped, but the corresponding input bits will
not be refreshed.
Meaning
Meaning
Normal status
Fatal hardware error (watchdog timer error)
• Power is not being supplied.
• Waiting for initialization to start
• Reset in progress
Online/Communications established
(Normal network status when communications
have been established)
(Normal network status when communications
haven't been established)
Fatal communications error (The Unit detected
an error indicating that network communications
are disabled.)
• Node number duplication
• Bus off error detected
(Communications timeout)
Offline/Power supply OFF
Waiting for completion of the node number dupli-
cation check in the Master.
• Incorrect switch settings
• Power supply OFF
Section 2-2
29