Omron CS1W-CRM21 - Display Section

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Master Unit Specifications Section 2-1
2-1-3 Display Section
Communications
Indicators
The following LED indicators are provided for communications.
MS (Module Status): Shows the status of the node itself. (Two colors: green
and red)
NS (Network Status): Shows the status of communications. (Two colors:
green and red)
SD (Send Data): Shows Master Unit transmission status. (One color: yel-
low)
RD (Receive Data): Shows Master Unit reception status. (One color: yellow)
The indicator flashing intervals are approximately 0.5 s lit and 0.5 s not lit.
Seven-segment
Display
• The seven-segment display shows the baud rate during normal transmis-
sion.
It lights while remote I/O communications are in progress and flashes
while they are stopped.
• When a communications error occurs, the following information is dis-
played in order: Error code (2 digits hexadecimal) - Type of Slave Unit at
error node - Node address (2 digits decimal).
• When an error other than a communications error occurs, the error code
(2 digits hexadecimal) is displayed.
Indicator Status Status definition Meaning
MS Lit green Normal The Unit is operating normally.
Lit red Fatal error Unit hardware error, such as a watchdog timer error (WDT)
Flashing red Non-fatal error Communications mode number or unit number setting error
Not lit Power OFF/Preparing Power OFF, resetting, or initializing
NS Lit green Online, with remote
I/O communications in
progress
Power is being supplied, remote I/O communications have
started, there are no communications errors at any Slave Unit
or Repeater Unit, there are no Registration Table errors, and
there are no node address duplication errors for Slave Units
or Repeater Units.
Flashing green Online, with no remote I/O
communications in progress
Remote I/O communications have not started or have
stopped (for a reason other than a communications error).
Lit red Fatal communications error An error has occurred in the communications circuit.
Flashing red Non-fatal communications
error
A communications error has occurred at one or more Slave
Units or Repeater Units.
A verification error (non-existent or unregistered Slave Unit)
has occurred at one or more Slave Units.
Communications have stopped due to a communications
error.
An illegal configuration error (number of Repeater Units) has
occurred.
An address duplication error has occurred at one or more
Slave Units or Repeater Units.
Not lit Power OFF/Preparing Power OFF, resetting, or initializing
SD
Lit yellow Normal transmission Frames are being sent normally from the Master Unit.
Not lit No transmission The Master Unit is not sending data.
RD
Lit yellow Normal reception Frames are being sent normally from a Slave Unit.
Not lit No reception The Master Unit is not receiving data.