1769-L35CR processor module

This field specifies the database address in the module's internal database to use as the destination for data brought in by a read command or as the source for data to be sent out by a write command. The database address is interpreted as a bit address or a 16-bit word (register) address, depending on the Modbus Function Code used in the command.  For Modbus functions 1, 2, 5, and 15, this parameter is interpreted as a bitlevel address.  For Modbus functions 3, 4, 6, and 16, this parameter is interpreted as a wordlevel or register-level address. Note: When using a bit level command, you must define this field at the bit level. For example, when using function codes 1 or 2 for a Read command, you must have a enter of 16000 to place the data in MNET.DATA.ReadData[0] (The module's internal register 1000 * 16 bits per register = 16000). Use this formula for function codes 5 or 15 for writing bits also

This controller tag is a 16bit signed integer. 

This means you can only enter values of -32768 to 32767 in the tag. If a value to be entered is above the 32767 (but below 65535) threshold, it will display as a negative value in the tag. Simply subtract 65536 from the value to get the 'acceptable' value to enter into the tag. Example: You need to use an Internal bit Address of 48000, but you cannot enter '48000' into the tag because it causes an error. 48000 - 65536 = -17536 You need to enter -17536 in the Internal Address parameter for this command.

This parameter specifies the minimum interval between issuances of a command during continuous command execution (Enable code of 1). The parameter is entered in tenths of a second. Therefore, if a value of 100 is entered for a command, the command executes no more frequently than every 10 seconds

This parameter specifies

 the number of 16-bit registers or binary bits to be transferred by the command.  Functions 5 and 6 ignore this field as they apply only to a single data point.  For functions 1, 2, and 15, this parameter sets the number of bits (inputs or coils) to be transferred by the command.  For functions 3, 4, and 16, this parameter sets the number of registers to be transferred by the command.

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