NEC NP-ME331X RS232 codes- Projectors - Page 6
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1|2|3| 4 |5|6| ~ | n | m 8 | 8 | 8 | 4 | 12 | 8 | ~ | 8 | 8 | | Bit | Bit | Bit |Bit| Bit | Bit | ~ | Bit | Bit Data length Model code Projector ID ID2 ID1 * ID1: (8 Bit) This is an identification data assigned to each command. Command : This sets an identification data assigned to each command to send it. ( See each command description.) Response : This returns the 6th bit of received ID1 as HIGH. For ACK it sends the 8th bit back as LOW (recognized); for NAK it sends the 8th bit back as HIGH (not recognized). * ID2: (8 Bit) This is an identification data assigned to each command. Command : This sets an identification data assigned to each command to send it. ( See each command description.) Response : This returns the value of received ID2 as is. * Projector ID : (8 Bit) This is a projector ID for the projector that sends and receives frames. Command : This specifies a projector ID for the projector that sends and receives commands. (individual notification) Entering 00H or FFH becomes a common command for all the projectors. (broadcast notification) This is convenient for controlling multiple projectors at the same time. * When the controller is connected with the projector on a one-to-one basis Broadcast notification is recommended. * When the controller is connected with multiple projectors To control a certain projector, use "individual notification". For all others "broadcast notification" is recommended. Response : This returns the projector ID for a projector received regardless of individual notification or broadcast notification.