Delta PD-01 user manual Troubleshooting via error codes, Code Meaning Corrective actives

PD-01 PROFIBUS-DP Module

00 – Normal

01 – CRC check failure

02 – VFD series Drive returns error code

03 – Communication is time out and disconnected

Byte 9 indicates the error code when byte 8 is 02 (VFD series Drive returns error code). Refer to the Section 6.3 for the meanings of invalid code.

Other word, user can get the diagnostic data via PZD area any time. PD-01 provides some special MODBUS addresses to indicate the diagnostic status, the address assignments are as following:

Address	0x7500		0x7501		0x7502		0x7503		0x7504
	High	Low	High	Low	High	Low	High	Low	High	Low
	byte	byte	byte	byte	byte	byte	byte	byte	byte	byte
	SP	Error
Meaning	comm				Reserved, read to 0
		code
	status

User can get these data through “Data Output 1”, or 2, or 3, or 4 in user parameters. For example, if set the “Data Output 1” to 0x7500 means get the diagnostic data from 0x7500, and get the return data from address 0x7500 in 1st word of PZD area.

NOTE:

These special addresses are read-only, it will fail if user tries to write data to it.

Troubleshooting via error codes

If there is a communication error detected between PD-01 and VFD series Drives, the error code will be displayed on the digital keypad of VFD series Drives.

VFD series Drives can process the message from PD-01 if the communication setting is valid. But if the command of message is invalid, the VFD series Drives will respond a report message that has error codes listed in table below, to PD-01.

	Code	Meaning	Corrective actives
	01	Illegal command code	1. Check the Request Identifier in PKW area.
		The command code received in the
		command message is not available	PD-01 just supports ID 0, 1, 2.
			2. Re-supply power to PD-01.
		for the drives.
	02	Illegal data address	1. Check the Parameter number in PKW area,
		The data address received in the	and refer the user manual of VFD Drives.
		command message is not available	2. Check the settings of user parameters “Data
		for the drives.	Input 1” to “Data Input 4” and “Data Output
			1” to “Data Output 4”, and refer to the user
			manual of VFD series Drives.
			3. Re-supply power to PD-01.
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