YASKAWA GPD 506/P5 Technical Manual

Also see for GPD 506/P5: Troubleshooting manual

Contents

Setting Parameters for Communication 5-5‘ENTER’ CommandThe GPD 506 has two types of memory: ‘Volatile’ and ‘Non-Volatile’. Data held in the Volatilememory will be lost when power is removed from the drive. Data held in Non-Volatile memory willbe retained when power is removed from the drive. Different types of registers are stored in differentareas of memory.Command Data:The command registers (001h to 009h) are stored in Volatile memory. When writing to a commandregister the new data becomes active immediately. In the case of a power loss all data stored inthese registers will not be retained.Monitor Data:The monitor registers (020h to 03Dh) are stored in Volatile memory. These registers can not bewritten to (read only registers). Any data read from the monitor registers will not be retained duringa power loss situation.Parameter Data:The parameter registers (101h to 174h) are stored in Non-Volatile memory. When writing new datato parameter registers, the new data is written immediately, however the new data is stored inVolatile memory. Sending the ‘ENTER’ command will save the new data in Non-Volatile memory.The new data takes effect after the drive has been stopped and restarted, except for registers 112hto 115h, in which case the data is effective immediately.The ‘ENTER’ command is accomplished by writing the value of ‘0’ to register 900h.If power loss occurs after the new data has been saved into Non-Volatile memory, by using the‘ENTER’ command, the data will be retained.NOTEUse the ‘ENTER’ command only when necessary!The life of the Non-Volatile EEPROM on the GPD 506 will support a finite number of operations.This means that the ‘ENTER’ command can only be used a maximum of a 100,000 times to storedata in the EEPROM. After the specified number of operations, the EEPROM may fault (CPF4)requiring the GPD 506 control board to be replaced.