Posted 6 Jul 2020 Hi Mr.PLC Members, I have Mitsubishi FX16MT unit, I'm trying to transfer programs to it using melsec medoc version 1.64b but I can't I'm receiving error "no reply from PLC system",I'm using 25 pin to 9 pin cable and I tried also to connect it with usb to serial cable but the same error appeared my setup: PLC system FX Bit rate 300 word length 7 parity Even stopbits 2 "windows XP" Attached are photo of my unit with my cables and the error of the program Share this post Link to post Share on other sites
Posted 6 Jul 2020 A serial cable will not work you have to use a Mitsubishi SC09 cable. The PLC is not RS232 the SC09 cable converts the RS232 to RS485 or RS422 l don’t remember of hand. You can bye these from EBay but be carful of some of the sites ideally try to get a genuine cable which is an orange coloured one. Rodney 1 person likes this Share this post Link to post Share on other sites
Posted 7 Jul 2020 Like @Rodneysaid you'll need the SC09. You can also get these USB versions from https://www.diatrend.com/ which work pretty good. Also you can windows applications GX Developer or GX Works 2 instead od Melsec medoc DOS. 1 person likes this Share this post Link to post Share on other sites
Posted 7 Jul 2020 16 hours ago, Rodney said: A serial cable will not work you have to use a Mitsubishi SC09 cable. The PLC is not RS232 the SC09 cable converts the RS232 to RS485 or RS422 l don’t remember of hand. You can bye these from EBay but be carful of some of the sites ideally try to get a genuine cable which is an orange coloured one. Rodney Thank you Mr Rodney, my plc output is 25pin port and I have an old PC has 9pin female and other 9pin male ports so I bought a 25 to 9 pin female cable I used it to communicate the plc but I get the same error Attached photo of plc port & the cable I'm using. Sorry If I didn't understand you well Share this post Link to post Share on other sites
Posted 7 Jul 2020 Hi AmirB As l said in my post the cable you have will not work. You require a cable from Mitsubishi SC09 this cable has electronics in it that. converts the RS232 signal coming from your computer. To RS485/RS422 that your PLC uses when reading and writing to your computer. As gambit said in his post if you have USB available on your computer you can buy a USB version that would work. But the simple way wold be to get the SC09 cable. good luck Rodney 1 person likes this Share this post Link to post Share on other sites
Posted 7 Jul 2020 6 hours ago, Gambit said: Like @Rodneysaid you'll need the SC09. You can also get these USB versions from https://www.diatrend.com/ which work pretty good. Also you can windows applications GX Developer or GX Works 2 instead od Melsec medoc DOS. Thank you Mr Gambit. I tried GX Developer but it doesn't have My unit type, it has all FX series except mine I have FX 16MT &A0J2 Share this post Link to post Share on other sites
Posted 7 Jul 2020 This seems to be a difficult topic to explain. I just happened to have this from another post. 1 person likes this Share this post Link to post Share on other sites
Posted 13 Aug 2020 On 07/07/2020 at 3:34 PM, Rodney said: Hi AmirB As l said in my post the cable you have will not work. You require a cable from Mitsubishi SC09 this cable has electronics in it that. converts the RS232 signal coming from your computer. To RS485/RS422 that your PLC uses when reading and writing to your computer. As gambit said in his post if you have USB available on your computer you can buy a USB version that would work. But the simple way wold be to get the SC09 cable. good luck Rodney Thank you very much mr Rodney I just got the cable"sc09" and it works very good Thank you again for your time On 07/07/2020 at 3:34 PM, Rodney said: Share this post Link to post Share on other sites
Posted 13 Aug 2020 On 07/07/2020 at 8:40 AM, Gambit said: Like @Rodneysaid you'll need the SC09. You can also get these USB versions from https://www.diatrend.com/ which work pretty good. Also you can windows applications GX Developer or GX Works 2 instead od Melsec medoc DOS. Thank you Mr Gambit Gx developer work great When I select plc type FXU Thanks again for your time Share this post Link to post Share on other sites
Posted 13 Aug 2020 AmigaB l am pleased you are now sorted. good luck Rodney 1 person likes this Share this post Link to post Share on other sites