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1
PART NAMES
This chapter describes the part names of the I/O module with diagnostic functions.
(6)
(4)
(1)
(1)
(3)
(2)
(2)
(5)
(7)
(7)
(8)
(8)
(9)
(11)
(11)
(10)
No.
Name
(1)
RUN LED
(2)
ERR LED
(3)
ALM LED
*1
(4)
S MODE LED
(5)
I/O status indicator LED
(6)
Module identification lamp
(7)
Rate indication
(8)
Terminal block
(9)
Terminal block cover
(10)
Terminal block for test pulse output
(11)
Production information marking
*1 The LED and terminal block are added to the module with production information (first four digits) of "0202" or later.
(6)
(4)
(3)
(5)
(9)
Description
Indicates the operating status.
On: In operation
Flashing (400ms cycles): Selected as a module for the online module change
Off: 5V power supply interrupted, watchdog timer error occurred, or module replacement allowed in the
process of the online module change
Indicates the error status of each I/O terminal in combination with the I/O status indicator LED. (
MELSEC iQ-R I/O Module (With Diagnostic Functions) User's Manual (Application))
On: Error occurred
Off: Normal operation
Indicates the alarm status of each I/O terminal in combination with the I/O status indicator LED. Or indicates
the wait-for-restart state after the safety module is disabled. ( MELSEC iQ-R I/O Module (With
Diagnostic Functions) User's Manual (Application))
On: Alarm occurred
Flashing (400ms cycles): Wait-for-restart
Off: Normal operation
Always off in normal mode. Used in SIL2 mode. ( MELSEC iQ-R I/O Module (With Diagnostic Functions)
User's Manual (Application))
Indicates the I/O status of each I/O terminal, error status, or alarm status according to the setting of "LED
display setting when error occurred".
• When "Hide abnormal occurrence points" is set
On: I/O signals on
Off: I/O signals off
• When "Always display abnormal occurrence points" or "Switching display of input status and alarm (1
second intervals)" is set
The I/O where an error has occurred can be specified. For details on the LED indication, refer to the
following.
MELSEC iQ-R I/O Module (With Diagnostic Functions) User's Manual (Application)
Light gray: Input
Dark orange: Output
Indicates the rated voltage, and input current or output current.
18-point screw terminal block. For the terminal layout, refer to the following.
Page 17 Performance Specifications
Covers for preventing electric shock while the power is on
*1
Not used in normal mode. Used in SIL2 mode. ( MELSEC iQ-R I/O Module (With Diagnostic Functions)
User's Manual (Application))
Shows the production information (16 digits) of the module.
1
1 PART NAMES
15
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