Hi I could use some help with a project that I'm stuck on. Any help would be GREATLY appreciated!
I am trying to connect to a GPRS modem using my computer, so that I can test the serial functions that I'm trying to enable. I am using PuTTY (the terminal emulator), and trying to connect to the device using an RS232 port with a TTL adapter. The GPRS unit uses 3V vlogic, so the RS232 must be stepped down. Here's a link to the GPRS unit:
http://ca.globalstar.com/shop/index.php?main_page=product_info&products_id=79
The manufacturer of the GPRS modem has supplied a program to flash new software onto the unit - and it has a built-in function that can automatically search all of the ports on the computer and return the ESN (electronic serial number) of the device. When I use the manufacturer program, the TTL adapter functions properly and the program finds the device and can communicate. However, I cannot connect to the device using a terminal emulator? The emulator should allow me to type if the connection was made successfully. The rep for the GPRS claims that "PuTTY cannot send binary to the modem". This has got me very confused. If I understand correctly, the translation character set in PuTTY does just that - it converts text to binary! Perhaps I have selected the wrong character translation set? Can someone point me in the right direction here? Any help.
This is part of a larger project to connect an Allen Bradley Micro800 (**broken link removed**) PLC to the modem using an Ethernet to TTL adapter. The adapter I want to use is this: http://www.wiznet.co.kr/product-item/wiz105sr/
Thanks for the help,
Sean
I am trying to connect to a GPRS modem using my computer, so that I can test the serial functions that I'm trying to enable. I am using PuTTY (the terminal emulator), and trying to connect to the device using an RS232 port with a TTL adapter. The GPRS unit uses 3V vlogic, so the RS232 must be stepped down. Here's a link to the GPRS unit:
http://ca.globalstar.com/shop/index.php?main_page=product_info&products_id=79
The manufacturer of the GPRS modem has supplied a program to flash new software onto the unit - and it has a built-in function that can automatically search all of the ports on the computer and return the ESN (electronic serial number) of the device. When I use the manufacturer program, the TTL adapter functions properly and the program finds the device and can communicate. However, I cannot connect to the device using a terminal emulator? The emulator should allow me to type if the connection was made successfully. The rep for the GPRS claims that "PuTTY cannot send binary to the modem". This has got me very confused. If I understand correctly, the translation character set in PuTTY does just that - it converts text to binary! Perhaps I have selected the wrong character translation set? Can someone point me in the right direction here? Any help.
This is part of a larger project to connect an Allen Bradley Micro800 (**broken link removed**) PLC to the modem using an Ethernet to TTL adapter. The adapter I want to use is this: http://www.wiznet.co.kr/product-item/wiz105sr/
Thanks for the help,
Sean