1．OverviewCP341 communication modules communicate for serial data with high speed and high performance via point-to-point link, easing the communication burden of CPU. It can be used for SIMANTIC S7-300 and ET200M and supports ASCⅡ and MODBUS master-slave station protocols. 2．Definition of communication port pinsCP341 communication modules communicate for serial data with high speed and high performance via point-to-point link,9-pin D Front connectorStitchIdentifierInput/OutputImplication1---2---3R/T(B)+InputReceive data (four-wire mode)Input/OutputReceive-transmit data (two-wire mode)4T(B)+OutputTransmit data (four-wire mode)5GND-Isolate from ground65V-5V Isolation 5V7---8R/T(A)-InputReceive data (four-wire mode)Input/OutputReceive-transmit data (two-wire mode)9T(A)-OutputTransmit data (four-wire mode)3. SpecificationsPower supplyFrom rear panel 5V, no external powerCurrent consumption, Max.150mAPower loss, typical value0.65WPower loss, Max.0.75WNo. of ports1Interface typeRS 485/RS 422Communication protocolASCIIMODBUS RTUCommunication speed0.3(Min.);0.6;1.2;2.4;4.8;9.6;19.2;38.4;57.6;76.8 and 115.2(Max.)k bit/sCommunication frame formatData length: 7-8 bytesStop bit: 1-2 bitsVertification mode: odd-even check, no vertificationMaximum packet lengthASCII: 2048 byteMODBUS RTU: with the standard for MODBUSDimensions (W * D * H)40×125×120  mm4,Order info.Item6ES7341-1CH02-0AE0 We produce these substitute S7-200,300,Profibus Products.>>>>Can be produced with your brand and model number.<<<<