Man_AL32_eng_v9723_2.. - FF-Automation

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AutoLog 32 Instruction Manual Page 6 - 726/10/20016.4.2. Adjustment of the analog inputsOccasionally you might need to replace an input module of an AL32 with a module foranother measurement range. In order to carry out the necessary adjustments youneed to proceede in the way described in chapter 16.6.4.3. Analog inputs of AL 32EXA boardIn order to read the analog inputs of the expansion board, you must load into thePLC's register memory R M 228 number 1. If you connect a EX32 board, the value is0 and in case of AL32EXA board the value is 1. The PLC's system program uppdatesall inputs and outputs every program cycle.6.4.4. Reading analog inputs by means of word variablesThe values of analog inputs on basic board are obtained in the form of word inputs(W I) as shown below (underlined bits).High byte0000xxxxLow bytexxxxxx00The analog input has a resolution of 10 bits. Its value is seen in steps of 4, as thenumbers 0, 4, 8, ..., 4092. If the value is desired in steps of 1 (0, 1, 2, ..., 1023),program as follows:STR W I 1DIV W C 4The table below shows the word input and register input variables corresponding tothe analog inputs.Analog input 0Analog input 1Analog input 2Analog input 3Analog input 4Analog input 5Analog input 6Analog input 7Word inputWord input 0Word input 1Word input 2Word input 3Word input 4Word input 5Word input 6Word input 7Register inputR I 0, R I 100R I 1, R I 101R I 2, R I 102R I 3, R I 103R I 4, R I 104R I 5, R I 105R I 6, R I 106R I 7, R I 107The values of the analog inputs (underlined bits)are obtained at the register inputs as follows:Example: R I 0 R I 100xxxxxxxx 0000xx00MSB LSBFF-Automation Oy
Page 6 - 826/10/2001AutoLog 32 Instruction Manual6.5 Analog outputsThe AL 32AN board has one and the AL 32EXA has four analog outputs. Theanalog outputs are voltage outputs (0 - 5 V or 0 - 10 V).6.5.1 Connection examplesAL16AN or AL32EXAAL32AN: Analog input 0 can be changned into ananalog output by putting jumpers on connectorsJ206, J606, and J607 (refer to Chapter 4,SWITCHES).NOTE: Pins 72 and 73 can then still be used as acurrent or voltage input but not as a temperatureinput.6.5.2. Analog outputs of AL32EXA boardIn order to write into the analog outputs of the expansion board, you must load intothe PLC's register memory R M 228 number 1. If you connect a EX32 board, thevalue is 0 and in case of AL32EXA board the value is 1. The PLC's system programuppdates all outputs every program cycle.FF-Automation Oy
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Man_AL32_eng_v9723_2.. - FF-Automation

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