OG_MU-4-434_v10e Circuit Design, Inc.
78
OPERATION GUIDE
◆
Relay function timing (with ACK, when 1 frame is transmitted)
@DT
Source station
transmit command
@DT
&
ACK response
Target station
Data receive
&
ACK transmit
tC
tP
*DT: Transmit command response
tACK
57ｍｓ
tACKout
tACKout =
ｔ
C + (m + 1)(57 + tP) + tA
Command time
tC = （ｎ + 7）×10000/br
Radio transmission time tP
=
（ｎ
×2.08
）
+ tO + (m×2.08)
Data receive time tR = （ｎ + 8）×10000/br
tP
*DR
*DR
tP
ACK output
*DR=00
Data output
tACK
57ｍｓ
tACK
57ｍｓ
Relay station 1
Relay station 2
tDATAout
tR
tA
ACK response time
tA = 80000/br
tDATAout =
ｔ
C + tP
・
(m + 1) + tR
◇Table
2 Overhead
：tO
242
225
Standard protocol
Error correction protocol
1～255
1～32
33～64
65～96
97～128
129～160 161～192 193～224 225～255
39
125
142
159
175
192
209
Communication protocol
Tx data bytes
[byte]
tO[ms]
With Error
tO[ms]
Without Error
39
135
152
169
185
202
219
235
252
* Units are ms, n=Number of data bytes sent(within 255 bytes), br=UART bit rate,
M=Number of relays (up to 10 units), tO=Overhead Table 2
* Reference value 1 with 20-byte link data: tDATAout=262 ms, tACKout=429 ms
Conditions: Standard mode, 57,600 bps, 2 relays
* Data output time when there is no ACK response is calculated with tDATAout
