pana-user 0 Posted February 1, 2014 Wonder if there someone out there with a similar setup or more experience than me with RS485. Problem Connect the camera to the DVR via RS485. I can see CCTV video fine, but am unable to control it with the DVR PTZ controls and it just runs a previous patrol scan How I have connected/configured things - I managed to get hold of the camera user and service manual, DVR manual, additional instructions re Pelco-P and RS485 from Panasonic The camera is a second user camera where the cable has been cut of, so I had to workout the wiring. I believe that that is as follows: RS485 - R(a) = green/black - R(b) = yellow/black - T(a) = orange/black - T(b) = red/black Other wires are for the alarm inputs and outputs (purple, green, red, black, yellow, blue, brown, orange, grey, white, pink, light green) - Configured camera with dip switches; 9600 baud, camera #7, Pelco-P protocol (=1110100), 4-wire RS485 (=1000, tried 2-wire also = 1111), last camera in chain as I only connect 1 camera at a time. - Connect the RS485 camera wires to the pins of the 25-pin D-type on my Avtech DVR; pin12 - black/green = R(A), pin 24 - black/yellow = R(B). Tried reversing also. - Set the same settings in the DVR; PTZ camera, Pelco-P protocol, 9600 baud, camera 007 - Settings show up OK when the camera initialises What I get - The camera starts, shows the start-up screen, then goes through a previous patrol scan. - When accessing the PTZ menu directly on the DVR user interface, none of the controls have an effect and the camera continues with its patrol sequence. Pressing MENU does not bring up the camera menu. Other things I have tried: - Use the orange/black and red/black wires or green and yellow or red and orange for RS485 - Access the menu by accessing preset 090 - 099 - Change from 4-line to 2-line communications - Switch off the termination resistance Would anyone know how I could control the camera? Should the camera be reset somehow first? Thanks Share this post Link to post Share on other sites
tomcctv 190 Posted February 1, 2014 hi. on that avtech the 25 pin does not control a ptz to the right of that you should see a rs11 socket. this is your ptz control red wire is A or + and green is B - or pin 3 as A and pin 4 as B Share this post Link to post Share on other sites
pana-user 0 Posted February 1, 2014 Hi tomcctv, Thank you for your advice, but the connector to the right of the 25-pin D connector is the RJ-45 LAN connector to connect the web and mobile apps via LAN or WAN. There are other AV798 models where e RS584 is on a separate RJ11 connector. This is the ZBD model, where I believe it is integrated into the D-type plug (there is no RJ11) This manual (docdroid.net/8rps) shows the 25-pin on page 65 with pin 12 = R(a) and pin 24 = R(b). Would you have any other ideas? Share this post Link to post Share on other sites
tomcctv 190 Posted February 2, 2014 Hi. Without rs485 plug then your unit is called thr avtech lite (connection cable is extra cost) Orange/ black is + A Red / black is - B Transmit is from 25 connector Share this post Link to post Share on other sites
pana-user 0 Posted February 2, 2014 Thank you tomcctv. I have tried your suggestion again and still get the same result. The camera just goes through its sequence and is unwilling to display a menu or respond to any PTZ commands from the DVR. It is as if it is locked to that sequence and I wonder if there is a way of resetting the camera to factory default? Or maybe the RS-485 is broken in the camera or the DVR. Is there a way to diagnose this without the expense of a £100 CCTV tester? Share this post Link to post Share on other sites
