YASKAWA PROFIBUS-DP 1000 Series Technical Manual

Also see for A1000 Series: Installation manual Technical manual Quick start guide Technical manual Manual

Contents

7 Option Data and I/O MapsYASKAWA ELECTRIC SIEP C730600 42B 1000-Series Option SI-P3 Technical Manual 25 Handshaking RegisterHandshaking synchronizes the timing of the sending or receiving of MEMOBUS/Modbus message data between theoption and the PROFIBUS-DP master.When the master toggles bit 7 of the handshaking register in the output data, the option starts to process the data in theMEMOBUS/Modbus registers. Ensure that the data in the MEMOBUS/Modbus registers is valid before toggling bit 7.When the option toggles bit 7 of the handshaking register in the input data to the same value as handshaking register bit 7in the output data, the content of the input data MEMOBUS/Modbus registers is valid.Handshaking Output RegisterPROFIBUS-DP Master to optionHandshaking Input RegisterOption to PROFIBUS-DP MasterBit 7 6 5 4 3 2 1 0HS – – – – – – INITBit Name Function7 HS Handshaking bit. Synchronizes send and receive timing. Changes status when sending new command messages.This bit is reset to 0 at power up or by setting the handshaking output register bit INIT to 1.1 to 6 – Not used.0 INIT Clears the handshaking bit to 0.Bit 7 6 5 4 3 2 1 0HS STATUS WD –Bit<1> STATUS and WD are for reference.Name Function7 HSHandshaking bit. Synchronizes send and receive timing. Changes status when sending new commandmessages.This bit is reset to 0 at power up or by initializing the handshaking output register bit INIT back to 0.5 to 6 STATUS <1>Status of the data exchange between the PROFIBUS-DP master and the drive.00H: Idle01H: SI-P3 sends a MEMOBUS/Modbus command to the drives10H: SI-P3 waits for a MEMOBUS/Modbus response from the drives11H: SI-P3 receives a MEMOBUS/Modbus response from the drives1 to 4 WD <1> Counter increases every 64 ms0 – Not used