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/*  For GW-7552                         */
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Version 1.8[20/05/2015] by Harlem
1. Fixed bug:
   a. Modbus ASCII Receive
   b. Safe Value mode
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Version 1.7[24/01/2014] by Luke
1. Fixed the bug that In the Modbus ASCII mode, it can't read AO/DO
2. Fixed the bug that in "Switch to Safe Value", the safe value won't be set correctly, 
   and it will cause system reset.
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Version 1.6[11/7/2013] by Ryan
1. Extend input area to 132 bytes
2. Modify GSD file to version v1.40
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Version 1.5[30/5/2013] by Elliot
1. System setting is added 4 bytes input.
2. Modify GSD file to version v1.30
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Version 1.4[17/1/2011] by Raiden
1. fixed bug
   a. The data of Modbus function code 15,5 and function code 1 overlap
   b. The data of Modbus function code 16,6 and function code 3 overlap
2. new add auto output function of output module
3. new add change word order function
4. fix communication parameters between GW-7552 and Utility
5. modify GSD file to version v1.20
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Version 1.3[9/7/2009] by Raiden
1. fixed bug: fix ethernet reconnection time error
2. avoid recieve error Modbus message
3. improve Modbus timer accuracy
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Version 1.2[9/4/2009] by Raiden
1. modify modbus exception code to diagnostic message
2. Add Diagnostic function=>lose PROFIBUS output data
3. new add trigger command of single output module
4. set Modbus Memory Size for Modbus Master and Slave mode
5. modify connection command between GW-7552 and Utility
6. fixed bug: EEPROM error for PROFIBUS Command=> New Slave Address
7. modify GSD file to version v1.10
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Version 1.1[11/6/2008] by Raiden
1. modify connection command between GW-7552 and Utility
2. new add "Get firmware version" command for utility
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Version 1.0[22/5/2008] by Raiden