Toshiba XLTR-200 사용자 설명서

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56
 
 
Signal
Ground 
(TB:3)
 
B
(TB:2) 
(TB:1) 
 
Figure 31: 700-Series ASD Connections 
 
• 
Note that although the 700-series ASD also supports the Modbus RTU 
protocol, the initial ASD firmware did not support the Modbus RTU protocol 
in 2-wire format.  Therefore, using the Mitsubishi protocol may be the only 
available method to communicate with the gateway (ASD parameter 549 
must be “0”).  Contact Mitsubishi Technical Support for more information. 
 
• 
The slave response timeout is determined via the gateway’s RS-485 port 
timeout value setting.  If the timeout value is set to 0, a default timeout time 
of 2s is used. 
 
• 
ASD communication characteristics are dictated by parameters 117-124 
(PU port) and 331-341 (RS-485 port).  Most of these parameters can be 
set as desired by the user.  However, the following parameters must be set 
as indicated to successfully connect to the gateway: 
 
Parameter 119/333 (stop bits/data bits) .........Must be set for 8 data bits 
Parameter 123/337 (wait time setting)............Must be set to 9999 
Parameter 124/341 (CR/LF selection)............Must be set to 1 (CR only) 
 
• 
ASD parameter number entry radix is decimal (e.g. 10 = 10
10
 
• 
Any numerically-addressed parameter defined by the Mitsubishi protocol 
reference manual is directly accessible (base frequency = parameter #3, 
etc.).  However, some ASD data objects do not have parameter numbers 
assigned by Mitsubishi.  For these data objects, the additional parameter 
numbers indicated in Table 3 have been assigned.  For further information