2026-06-15: v221
1. Fix Problem: Fixed the issue of incorrect SYNC settings.
2. Fix Problem: Fixed the issue that prevented the Slave from entering pre-operation mode.

2024-07-30: v220
1. Fix Problem: Fixed the problem that the CAN network would easily timeout after adding station 9.
2. New Function: New supports slave amount extend to 20 (with GW-7433D Utility v2.050).

2022-10-19: v219
1. Fix Problem: If CANopen slave amount more than 9, the response of slaves station will be slower.

2021-01-22: v218
1. Fix Problem: Sometimes firmware will going to listen mode automatically after use test function of GW-7433D Utility.
2. Fix Problem: If CANopen slave ID more than 8, the slave will always timeout with GW-7433D.

2020-02-03: v217
1. New Function: User-defined password (requires utility v2046)
2. New Function: Support Modbus TCP node id 0 setting

2018-12-03: v215
1. Firmware update for support new OS and PCB.

2018-05-30: v214
1. Fix Problem: The RxPDO message is fixed at 8-bytes data. It will cause some CANopen device can't check the RxPDO message because the data length is wrong.
                Fix the problem and let the data length of RxPDO message follow it's setting.
2. Fix Problem: Sometimes connects to 10 CANopen slaves will cause WDT reset.

2017-02-10: v213
1. Fix Problem: The TxSDO of "Test Mode" always responsed "timeout".

2016-09-27: v212
1. Fix Problem: Modify LED display of Modbus ID from Dec to Hex.
2. Fix Problem: The forth PDO setting may be coverd by behind PDO.

2016-03-10: v211
1. Fix Problem: If Modbus ID is not 1, the GW-7433D will can,t connect with Utility.
 
2016-01-22: v210
1. Firmware update for support new v2.92 PCB.

2015-09-02: v209
1. New Function: Support CANopen Slave Stutes Setting by Modbus Address.
2. Fix Problem: GW-7433D Utility ver 2040 set error with firmware v208. 

2015-05-08: v208 (beta)
1. New Function: User can set one CAN message to send cyclically (it can be Master heartbeat message).
2. Fix Problem: Use Modbus function 16 may cause output data lose.

2013-07-26: v207
1. Fix Problem: When use "4-byte" RxSDO type may cause output data lose.

2012-09-04: v206
1. Fix Problem: Fix the address error of "Byte" data type.
2. Fix Problem: GW-7433D may decided CANopen slave off-line when the slave use TxPDO "UnRtr" function.
3. Fix Problem: If CAN bus is too busy, the GW-7433D may stop to send any CAN message.

2012-07-18: v205
1. New Function: TxPDO support "UnRtr" (Event Timer) function.
	Because some CANopen devices TxPDO will be auto send after power on and need not to RTR them.
