Mitsubishi FX3U-16CCL-M User Manual

10 Buffer Memory
10.5 Master Block Control Signals
106
FX3U-16CCL-M User's Manual
10.5 Master Block Control Signals
10.5.1 [BFM#29] Error code
This buffer memory address stores error code information for the FX3U-16CCL-M.
The following meaning is assigned to the error code handled as the ON/OFF information of bit 0 to bit 15.
BFM#29 Error code
Bit Description Explanation
b0 BFM accessibility error
OFF: No error
ON: The executed TO instruction specifies an unavailable area or unassigned remote I/O
(RX/RY) area or remote register (RWw/RWr) area.
Communication state: Continuation
Action: Please check the PLC program.
To reset this bit, write "K0" to BFM #29.
b1 Transmission rate setting error OFF: No errors in the setting
ON: The rotary switch is set outside the allowable setting range.
Communication state: Stop
Action: Please check the setting of the rotary switch.
b2 Station number setting error
b3 Reserved 0 (Not used)
b4 Reserved 0 (Not used)
b5 Transmission rate change error OFF: No setting change
ON: This bit turns ON when the rotary switch setting is changed after the FX3U-16CCL-M
is started, and turns OFF when the rotary switch is returned to its previous setting.
Communication state: Continuation
Action: Please check the setting of the rotary switch.
b6 Station number change error
b7 Reserved 0 (Not used)
b8
Errors in internal communication
power supply
OFF: No error
ON: Inside communication power supply error
Communication state: Stop
Action: For repair, contact your local Mitsubishi Electric representative.
b9 Hardware error
OFF: No error
ON: Hardware error
Communication state: Stop
Action: For repair, contact your local Mitsubishi Electric representative.
b10 Unit status
OFF: Normal
ON: Abnormal
Data cannot be transferred normally to/from the main unit.
Communication state: Stop
b11 Master station operation status
OFF: Normal
ON: Abnormal
Communication state: Continuation or stop
b12 Transient transmission status
OFF: No error
ON: Error (SB0094)
Communication state: Continuation or stop
b13 Main unit initialization status
OFF: Main unit initialization completed
ON : Main unit initialization not completed
This bit turns ON when the main unit is not powered, or when there is a power failure in the
FX3U-16CCL-M.
Communication state: Continuation or stop
b14 Reserved 0 (Not used)
b15 Reserved 0 (Not used)

Mitsubishi FX3U-16CCL-M Specifications

General

Brand	Mitsubishi
Model	FX3U-16CCL-M
Category	Controller
Language	English