Archive:CALMU3

Calmu3 (possibly Calmu3+) from Polymeters Response International. "The first microprocessor-based meter", using "FFT, rather than 'brute-force' DSP" [1]

I think I read somewhere that Calmu3 (minus the +) lacks CoP5 approval.

It may need calibration periodically, but that's probably up to the supplier.

Details

• Serial no: P99A01869
• Part no: C3DBD0BC0SJ (3 phase direct, class 1 accuracy, lithium backup, ?)

Interfaces

• Infrared PACT port (this is a standard - possible adapter)
• Serial port ("for PC, modem or PACTLAN")

Software with support

• Principal (DOS) or Ease II (can't get this to run on XP due to .vbx; probably needs 2000; uses stopcopy protection) from PRI
• mv-rs, and possibly other Itron stuff
• Ziphany http://www.ziphany.com/Files/Supported_Meters.pdf

Resources

A later model, with overview.

Presumably ex-PRI consultant on Calmu meters

Serial protocol

1200bps ASCII, \r terminated

Equals symbols are shown on some variables, but presumably wouldn't fit for many.

Once a 'N', 's', 'u' or 'x' are matched, all the remainder of the line is ignored. This suggests they might be for switching to a different protocol, or buggy code. 'u' is definitely buggy.

Commands

F	Frequency, updated per sample	"F=50.138\r"
N	Switch protocol?	ff
R	(Real?) time	"R=15:00:40\r"
S	Serial number (presumably "=" doesn't fit)	"SP99A01869\r"
s	?	"s=", dword 0xa605019e, dword 0, "\r"
u	(probably unimplemented)	"U\r"
x	Switch protocol?	ff
B[AVWvw]	?	"BAA3123B" "BV182B85" "BW918D2F" "Bv05B6CE" "Bw01B525"
I[123]	Current	"I1+15.230" "I2+0.0000" "I3-0.0300"
K[123AVW]	?	"K1+2.0700" "K2+0.0000" "K3+0.0100" "KA+2.0600" "KV-1.3300" "KW+1.6300"
L[123]	Load?	"L1+9.0200" "L2+0.0100" "L3+0.0200"
P[123]	?	"P1+1.6400" "P2-0.0000" "P3+0.0000"
Q[123A]	?	"Q1=0.769-" "Q2=1.000+" "Q3=1.000+" "QA=0.787-"
U[AVWvw]	Units	"UA=2631984" "UV=0349470" "UW=2549220" "Uv=0177551" "Uw=0000001"
V[123]	Voltage	"V1+236.75" "V2+240.72" "V3+242.45"
i[123]	Current?	"i1-5.6300" "i2-0.0000" "i3-0.0100"
p[123]	?	"p1-1.3400" "p2+0.0000" "p3-0.0100"
u[AVWvw]	?	"UA=2631986" "UV=0349470" "UW=2549221" "Uv=0177552" "Uw=0000001"
	?