[RC232] Are the RC1140 and RC1240 compatible No. They are not compatible. Last Update: August 8, 2017 July 7, 2017 1738 RC232 Q&A Related Knowledge Base Posts -[RC232] What do you mean by peer-to-peer communication ?[RC232] Have your heard of Modbus… do you have any experience..?[RC232] The Datasheet for RC2500HP-RC232, shows 2 pins: PA_EN & LNA_EN, are they to be used or should I disregard them?