<td>Turns Modbus Serial Master configuration via RS232 on or off. Both this and RS232 from Services → [[{{{name}}} RS232|RS232]] cannot be enabled at the same time.</td>
+
<td>Turns Modbus Serial Master configuration via RS485 on or off. {{#ifeq:{{{series}}}|TRB1||Both this and RS232 from Services → [[{{{name}}} RS232|RS232]] cannot be enabled at the same time.}}</td>