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Merge pull request #120 from fengzeroz/main

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modbus: limit read reg count
This commit is contained in:
fengzeroz
2021-10-21 18:04:40 +08:00
committed by GitHub
parent fe4c9ed165 aa6e58b58b
commit b4028ff833
1 changed files with 2 additions and 1 deletions
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plugins/modbus/modbus_point.c
+2 -1
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@@ -437,7 +437,8 @@ static void insert_cmd(modbus_point_context_t *ctx, modbus_point_t *point)
for (int i = 0; i < ctx->n_cmd; i++) {
if (ctx->cmds[i].device == point->device &&
ctx->cmds[i].function == function) {
if (ctx->cmds[i].start_addr + ctx->cmds[i].n_reg == point->addr) {
if (ctx->cmds[i].start_addr + ctx->cmds[i].n_reg == point->addr &&
ctx->cmds[i].n_reg < 126) {
exist = true;
if (point->value.type == MODBUS_B32) {
ctx->cmds[i].n_reg += 2;