read coils, inputs, and registers in the modbus explorer -凯发k8网页登录

to perform a read operation, enter the information about the coils, inputs, registers, or holding registers you want to control in the read registers table. the first row of the table is already filled in with the register you configured on the configure tab.

to set up another register, click insert. for each inserted row, click the address field and enter the address of the coil, input, input register, or holding register you want to read values from.

in the register type column, click the down arrow to select the target type to read. you can perform a modbus read operation on four types of targets: coils, inputs, input registers, and holding registers.

in the precision column, click the down arrow to select the precision. choose the data format of the register being read from on the modbus^® server.

in the name column, enter a name. a default name is provided, and you can keep it or change it.

once you have entered all of the fields, click resume reads to start reading.

if the read is successful, the read value column fills in with the read value. if you see 'error' in the read value field, adjust the parameters until the read is successful.

to read multiple registers, add rows to the table by clicking insert on the toolstrip. new rows are added to the top of the table. you can add as many rows as you need. for each row, fill in all of the fields for that read. while you are editing a row, reading is paused, as indicated by the paused status to the left of the resume reads button.

after you set up the table, click resume reads.

the reads are performed and the status changes to live. you can also see the read values in the live plot.

if you want to alter the plot, use the plot tools section. you can change the axes, show or hide the legend, and select which registers to display in the plot. the plot changes dynamically when you change any of these factors using the plot tools.