devc->expecting_registers = 0;
if (sr_modbus_read_holding_registers(modbus, -1, 4, registers) == SR_OK) {
packet.type = SR_DF_FRAME_BEGIN;
devc->expecting_registers = 0;
if (sr_modbus_read_holding_registers(modbus, -1, 4, registers) == SR_OK) {
packet.type = SR_DF_FRAME_BEGIN;