For indicator software debugging, see"14.2 L series key functions and parameter settings". Setting and operation of communication parameters with HART protocol indicator If the instrument wants to communicate with the upper computer, the corresponding parameter setting shall be carried out before communication. The parameter setting is shown in Table 21. For key operation, see"14.2 L series key functions and parameter settings" Setting and operation of communication parameters with Modbus protocol indicator If the instrument wants to communicate with the upper computer, the corresponding parameter setting shall be carried out before communication. The parameter setting is shown in Table 22.. For key operation, see"14.2 L series key functions and parameter settings" Refer to table 23 for the name and address of instrument configuration software