3.2
Data Communications with the Watlow Series 988 Family
Communications Setup, Chapter 3
Setup
Prompt
Appears if…
Range
Factory
default
[bAUd]
comms unit
(Baud rate)
[`300]
,
[`600]
,
[1200]
,
[2400]
,
[4800]
,
[9600]
[9600]
[dAtA]
comms unit
[``7o]
= 7 data bits, odd parity
[``7o]
[``7E]
= 7 data bits, even parity
(see note)
[``8n]
= 8 data bits, no parity
(Start bit = 1)
(Fixed)
(Stop bit = 1)
(Fixed)
[Prot]
comms unit
[FULL]
= ANSI X3.28 2.2 - A.3
[FULL]
[``On]
= XON / XOFF
[Mod]
= Modbus (988 only)
[Addr]
[Prot]
=
[FULL]
0 to 31 (ASCII) if
[IntF]
=
[`485]
[```0]
or
0 to 9 (ASCII) if
[IntF]
=
[`422]
[```0]
[Prot]
=
[Mod]
0 to 247 if
[IntF]
=
[Mod]
[```1]
[IntF]
"S" hardware
[`485]
= EIA-485 Interface type
[`485]
[`422]
= RS-422 Interface type
TL
W
WA
PROCESS
L1
L2
L3
L4
DEV
% OUT
DISPLAY
MODE
HOLD
RUN
SERIES 988
Figure 3.2 -
The Communications
Menu.
Setup at the Controller's Front Panel
• Press the
<
and
>
keys simultaneously for three seconds.
• The
[SEt]
prompt appears in the lower display.
• Press the
<
or
>
key until the
[COM]
prompt appears.
• Press the
µ
key to advance through the Communications Menu.
• Press the
<
or
>
key to select communications values from the table below.
• Document the setup parameters for each device on your network and label each
device.
• Press the
∂
key to exit.
Table 3.2 -
Communications
Menu Prompts and
Descriptions.
NOTE:
Selecting
[Mod]
automatically sets
[dAtA]
to
[``8n]
.
[IntF]
[Addr]
[Prot]
[dAtA]
[bAUd]
[IntF]
"U" hardware
[`232]
= RS-232 Interface type
[`232]
[`485]
= EIA-485 Interface type
[COM]
