I'm experimenting with Automation-Direct "Terminator" I/O analog modules and wondering if anyone has experience in configuring the T1F-16DA Voltage Analog Output modules.
According to the manual, the module is configured by setting bits in Byte 4. in my case, this represents Modbus address 40002 and I have to turn on bit 24 (enable all outputs) and bit 26 (1-10V range). There are 32 bits per channel. The first register (40001) is represented by the first 16 bits and holds the actual analog value. The second group, or register, (40002) of 16 bits is for configuration.
I have written 1280 to Modbus address 40002 to configure the module, but if I write a value to the address tied to output "0" (40001), I don't get a voltage referenced to ground. According to the documentation, I need an impedance of at least 4K between "0" and "COM" (I have 7.13K). Also, the documentation says 0 = 0V and 4095 = 10V, so I've loaded 2048 into 40001, expecting to see around 2.5V at the output - I see nothing.
Any suggestions?
According to the manual, the module is configured by setting bits in Byte 4. in my case, this represents Modbus address 40002 and I have to turn on bit 24 (enable all outputs) and bit 26 (1-10V range). There are 32 bits per channel. The first register (40001) is represented by the first 16 bits and holds the actual analog value. The second group, or register, (40002) of 16 bits is for configuration.
I have written 1280 to Modbus address 40002 to configure the module, but if I write a value to the address tied to output "0" (40001), I don't get a voltage referenced to ground. According to the documentation, I need an impedance of at least 4K between "0" and "COM" (I have 7.13K). Also, the documentation says 0 = 0V and 4095 = 10V, so I've loaded 2048 into 40001, expecting to see around 2.5V at the output - I see nothing.
Any suggestions?
Last edited: