Cont
- sends 8 bit ASCII form of display data at a rate typically 90% of the sample rate.
POLL
- controlled by computer or PLC as host.
Host sends command via RS232/485 and
instrument responds as requested.
A.buS
- is a special communications mode used with Windows compatible optional PC download
software. Refer to the user manual supplied with this optional software.
M.bus
- Modbus RTU protocol.
5.43
Instrument address for optional serial communications
Display:
Addr
Range:
0
to
31
Default Value:
0
Set unit address for polled (
POLL
) or
M.buS
mode (
0
to
31
)) - seen only with serial output option.
Refer to the separate “RM4 Din Rail Meter Optional Output Addendum” booklet supplied when
optional outputs are fitted. Allows several units to operate on the same RS485 interface reporting
on different areas etc. if RS485 is available. The host computer or PLC may poll each unit in turn
supplying the appropriate address. The unit address ranges from 0 to 31 (DEC) but is offset by
32 (DEC) to avoid clashing with ASCII special function characters (such as
<
STX
>
and
<
CR
>
).
Therefore 32 (DEC) or 20 (HEX) is address 0, 42 (DEC) or 2A (HEX) is address 10. Do not use
address 0 in
M.buS
mode.
5.44
Serial mode for optional serial communications
Display:
SERL
Range:
LiuE, tARE, P.HLd, d.HLd, Hi, Lo, HiLo
or
dISP
Default Value:
LiuE
Seen only with serial output option - applies only when
O.Put
function set to
Cont
. Refer to
rEC
function. The
HiLo
selection in this functions allows both the peak and valley memories to
be transmitted. The peak value will be transmitted followed by a space then the valley value.
RM4IVMAN-2.1-0
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Summary of Contents for RM4-IV
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