![](../../../IMAGES/L1.GIF) | Honeywell PML Handshaking Protocol | ![](../../../IMAGES/L2.GIF) |
- Honeywell PML uses a handshaking protocol similar to that of ADEPT
- Tokens on the bus have one of four values: idle, request, ack, busy
- Tokens change the state of the token by changing the state field of the utoken RECORD
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