raw_mond rawkey monkey shmsize [ chfile [ logfile ]]
Raw_mond is initiated in daemon mode.
When log file name logfile is specified, operation log is set here. When it is not specified, log information is sent to the standard output (however, it is sent to syslogd(8) when operation is made in the daemon mode). The log file is opened/closed in each write.
When raw_mon is initiated without argument, brief usage is displayed.
The channel file is a text file that hexadecimally lists channel numbers, one for each line. In each line, only the first item is read, while the subsequent items delimited by blanks or tabs are all bypassed. Any lines starting with '#' are also bypassed. When receiving a hang-up signal, the raw_mon process rereads the channel file.
For the format of the shared memories, refer to order(1W) and winformat(1W).
The MON format is an irreversible data compression format for saving only the maximum and minimum values in 0.2 second-long intervals. Similarly to ones in the normal win format (RAW format), a second-scale channel block consists of a time header (second header) and channel blocks for the number of channels but has a different internal structure. A channel block consisting of data for one channel/one second has the following format:
| Channel number | Interval 1 | Interval 2 | Interval 5 | |
| Max/min value | Max/min value | ... | Max/min value | |
| 2B | Variable length | Variable length | Variable length | |
| Channel block (variable length) | ||||
The two bytes at the top is for the channel number, followed by variable-length (1-to-7-byte-long) blocks for five intervals (one second), each containing the encoded minimum and maximum values in a 0.2 second interval. The minimum and maximum values in a 0.2 second interval are encoded in the format below. The double vertical lines in the figure stand for byte boundaries. In the sequence of bits of each byte, the high-order bit comes to the left end. Multiple byte values are expressed in big-endian order (high-order byte first), and negative values are complements of 2.
(1) When both the minimum and maximum values can be expressed with 7 bits:
| High-order 3 bits | High-order 3 bits | Value | Low-order 4 bits | Low-order 4 bits |
| for min value | for max value | 00 | for min value | for max value |
| 3 b | 3 b | 2 b | 4 b | 4 b |
| Maximum and minimum values in a 0.2 second interval (2 B) | ||||
(2) When both the minimum and maximum values can be expressed with 11 bits:
| High-order 3 bits | High-order 3 bits | Value | Low-order 1B | Low-order1B |
| for min value | for max value | 01 | for min value | for max value |
| 3 b | 3 b | 2 b | 1 B | 1 B |
| Maximum and minimum values in a 0.2 second interval (3 B) | ||||
(3) When both the minimum and maximum values can be expressed with 19 bits:
| High-order 3 bits | High-order 3 bits | Value | Low-order 2B | Low-order 2B |
| for min value | for max value | 10 | for min value | for max value |
| 3 b | 3 b | 2 b | 2 B | 2 B |
| Maximum and minimum values in a 0.2 second interval (5 B) | ||||
(4) When both the minimum and maximum values can be expressed with 27 bits:
| High-order 3 bits | High-order 3 bits | Value | Low-order 3B | Low-order 3B |
| for min value | for max value | 11 | for min value | for max value |
| 3 b | 3 b | 2 b | 3 B | 3 B |
| Maximum and minimum values in a 0.2 second interval (7 B) | ||||