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6 Programless Communications
E5C-T Digital Temperature Controllers Programmable Type Communications Manual (H186)
6-2 E5@C-T Controller Setup
6
6-2-2 Communications Unit No. and Communications Baud Rate
Always assign communications unit numbers in order starting from 0. Do not skip any numbers. Com-
munications unit number 0 is for the master. The numbers from 1 on are for the slaves. We recommend
a communications baud rate setting of 57.6. Set the same communications baud rate for all of the
E5@C-T Controllers and the PLC. (Setting the PLC is required only for programless communications.)
Communications Setting Level
Display condition: None
This is the time that the E5@C-T will wait from the time that it receives a response from the PLC (or, for
component communications, from an E5@C-T slave) until it sends the next command. Increase the set
value of this parameter if the command is sent too soon to allow the PLC (or, for component communi-
cations, the E5@C-T slave) to receive it.
Communications Setting Level
Display condition: None
Set the Highest Communications Unit No. parameter to the highest communications unit number that is
actually set on the connected E5@C-T Controllers.
Make sure that setting of the Highest Communications Unit No. parameter agrees with the unit numbers
of the E5@C-T Controllers that are actually connected.
6-2-2 Communications Unit No. and Communications Baud Rate
Parameter name Displayed characters Setting range Default
Communications Unit
No.
u-no 0: Master
1 to 31: Slaves
1
Communications Baud
Rate
bps 9.6: 9600bps
19.2: 19200bps
38.4: 38400bps
57.6: 57600bps
9.6
6-2-3 Send Data Wait Time
Parameter name Displayed characters Setting range Default
Send Data Wait Time sdwt 0 to 99 ms 20 ms
6-2-4 Highest Communications Unit No.
25
0
C
25
0
C
25
0
C
E5CC-T
No.0
E5CC-T
No.1
E5CC-T
No.2
25
0
C
PLC
The highest communica-
tions unit number is 2.
Set the communications
unit numbers starting
from 0.
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