YASKAWA MP900 Series - User Manual

Questions and Answers:

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jesse14Aug 20, 2025
What to do if YASKAWA MP900 Controller MSG-SND function remains BUSY?
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  Richard MitchellAug 20, 2025
  If the MSG-SND function remains BUSY and does not end in your YASKAWA Controller, it could be due to the following reasons: * A MSG-SND function parameter setting error. Check that the MSG-SND function parameter settings are correct, especially the remote station number. * Too much traffic on DeviceNet, preventing the sending of the Explicit request message. Try setting a longer communications cycle time. For multi-Master configuration, increase the communications cycle time for other Master.
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diazchristopherAug 23, 2025
What causes delayed receive data refresh in YASKAWA Controller communications?
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  Kelsey HammondAug 23, 2025
  Delayed receive data refresh during communications with your YASKAWA Controller can occur due to: * Too much traffic on DeviceNet. The communications cycle time setting is too low for the I/O response receive time. * The processing load for data exchange with the PLC is too large. To resolve this: 1. Set a longer communications cycle time. 2. Reduce the baud rate. 3. Increase the setting of the CPU scan time for the I/O allocation SCAN setting.
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Donald JonesAug 25, 2025
What to do if YASKAWA MP900 has no response from DeviceNet Master?
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  nhillAug 26, 2025
  To troubleshoot a lack of response from the DeviceNet Master with your YASKAWA Controller: 1. Check the wiring and connections for DeviceNet cables and connectors. 2. Check the baud rate for each device. 3. Check the terminator (121 ?) and connection status. 4. Check the operation status of the DeviceNet Master. 5. Check the power supply voltage and connection for communications power supply. 6. Check the communications power supply voltage for each DeviceNet connector on the 260IF Module (11 to 24 V).
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Stephanie GomezAug 27, 2025
What causes MSG-SND function termination in YASKAWA MP900 during DeviceNet communications?
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  Daniel WilliamsAug 27, 2025
  The MSG-SND function might terminate due to an error during DeviceNet communications in your YASKAWA Controller if there is a parameter setting error. Check that the MSG-SND function parameter settings are correct, specifically the data address and data size.
B
Bailey AlvaradoAug 30, 2025
How to resolve I/O size differences in YASKAWA MP900 Controller DeviceNet?
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  Cynthia CrawfordAug 30, 2025
  If the I/O sizes of each DeviceNet device are different from the setting in your YASKAWA Controller: 1. Change the I/O sizes for the I/O allocations. 2. Change the I/O sizes for the DeviceNet device.
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Patrick SimpsonSep 1, 2025
What to do if YASKAWA MP900 Controller connection is not established with DeviceNet device?
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  David SheaSep 1, 2025
  Set the I/O allocations to establish a connection with the DeviceNet device using your YASKAWA Controller.
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Michael DaughertySep 4, 2025
What causes excessive communications cycle time in YASKAWA MP900 Controller?
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  Lauren PittmanSep 4, 2025
  If communications are occurring, but the maximum communications cycle time exceeds the setting on your YASKAWA Controller, it's likely due to too much traffic on DeviceNet. The communications cycle time setting is too low for the I/O command send time. To fix this, set a longer communications cycle time.
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Gregory BrewerSep 6, 2025
What to do if YASKAWA MP900 Controller has no DeviceNet communications due to network error?
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  Sara NortonSep 7, 2025
  If your YASKAWA Controller is experiencing no DeviceNet communications due to a DeviceNet network error: 1. Check the wiring and connections for DeviceNet cables and connectors. 2. Check the baud rate for each device. 3. Check the terminator (121 ?) and connection status. 4. Check the operation status of the DeviceNet Master. 5. Replace the 260IF Module.
S
Stephen ClaySep 9, 2025
What to do if YASKAWA MP900 has connection issues due to DeviceNet I/O size?
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  Kristina MartinSep 9, 2025
  If a connection cannot be established with a DeviceNet device on your YASKAWA Controller because the DeviceNet I/O size is different from the setting: 1. Change the I/O sizes for the I/O allocations. 2. Change the I/O sizes for the DeviceNet Master.
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jgarciaSep 12, 2025
What to do if YASKAWA MP900 has EM allocations not made?
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  Audrey GrahamSep 12, 2025
  Set the EM allocation under I/O Allocations on your YASKAWA Controller.

YASKAWA MP900 Series Specifications

General

Series	MP900
Power Supply	24 VDC
Type	Controller
Communication Interface	Ethernet/IP, Modbus TCP, MECHATROLINK-III, EtherCAT (varies by model and options)
Communication Protocols	EtherCAT, EtherNet/IP, PROFINET, MECHATROLINK-III
Programming Language	IEC 61131-3 compliant languages (LD, ST, FBD, etc.)
Operating Temperature	0°C to 55°C
Storage Temperature	-20°C to 70°C
Safety	STO (Safe Torque Off)
Humidity	10% to 90% (non-condensing)