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Showing results for tags 'rs422'.
Found 8 results
[SOLVED] How to send ASCII commands over Hyperterminal to old Honeywell UDC
Riskinit posted a topic in General Topics - The LoungeI have a very old Honeywell controller that only supports an ASCII protocol and another DMCS protocol (proprietary to Honeywell). I am using this manual: http://www.amarketplaceofideas.com/wp-content/uploads/2019/07/51-51-25-35h1.pdf and Hyperterminal "Send a text file" function to try to send an ASCII command to the controller. My command looks like this: 02,0204,64,11,128,0,CR LF When I do this in Hyperterminal I get no apparent response. My hypothesis is I am not sending the correct formatted ASCII. Does anyone know what the correct format might be?
Industrial USB to Isolated RS-232/422/485 Converter
Kann posted a topic in Product ReviewsHello, I have noticed that a frequent product here is the I-7561U. I'd like to know your reviews. What are you using it for?
Connect Siemens HMI 6AV2 124-0MC01-0AX0 with PC/Laptop
Akhmad Zaki posted a topic in SiemensI have a Siemens HMI 6AV2 124-0MC01-0AX0 in my machine. I want to clone the display on the HMI to PC/Laptop. My question is: 1. What software that I need for this task? 2. What kind of interface that I need between the HMI and PC/Laptop (for example ethernet cable, etc)? 3. Do I need to communicate with PLC connected with HMI or can I just connect with the HMI? Thanks in advance for the answer.
communication between HMI GS series mitsubishi to inverter hitachi SJ700 series
diraemon posted a topic in Mitsubishihy everyone.. I want to communication inverter SJ700 to hmi mitsubishi GS2017 for read an code error in interface HMI? is it possible to communication between them?
Difference between RS232, RS485 , RS422
zubair136 posted a topic in Mitsubishii am new in plc programming . i know the basics difference between the rs232, rs422, rs485. but i am little bit confused in it. so i have the following question regarding these terms. 1. can these protocols communicate with each other i mean rs232 can communicate with rs422 or rs485 and same. 2. my plc has port rs422 but i can connect it with my laptop serial port which is rs232 ? 3. what are the main important points that kept in mind during communication or cross communications. any help will be greatly appreciated.
Direct communication between two fx3g using front 422port
sczot posted a topic in MitsubishiHello, is it possible to directly connect two FX3Gs together using only front 422ports without any additional cards? And if it is, can you give me some direction where to search for details? thanks in advance
GE PLC PCM
Akib Nadaf posted a topic in GEThe topic is based on "How to configure a PCM module in GE PLC". One new query in PCM. To configure this PCM Module some procedure is to be followed in CMD prompt. Initially once ''READY'' line displayed. Query to this topic is if ''READY'' line repeats below persistently in CMD prompt, then solution is ______????
Master-Slave master side SW architecture with Custom RS422 full duplex protocol
GuyB posted a topic in Other PLCsHey Guys,i'm working on implementing the master side of a custom serial master-slave protocol between a B&R PLC and an electronic card.As part of the data i'm sending and receiving is used to close various loops(e.g. cascaded temperature control where the temperature sensors and actuators are connected to the electronic card) , but other data is not as usefull (e.g. various data used for display or at specific times), i believe i will also need to implement some sort of priority mechanism.my first question is - based on your experience - how would the general master side SW architecture look like? (for example - the send side of mine is comprised of 3 tasks all running under the same cycle - lower level task in charge of opening the port, sending the data etc, a mid level task in charge of creating the packet based on command from upper level, giving commands to lower level and using status from it to continue and finally - an upper level task in charge of deciding which messages to send).my second question is - how would you implement the priority mechanism?thanks